tag:blogger.com,1999:blog-89370948936073440142024-03-05T01:09:00.190-07:00Northern AstronomyAstronomy with a focus on Northern Hemisphere viewing! Astronomy is a wonderful science that anyone can participate in; the sky is open to everyone!Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.comBlogger338125tag:blogger.com,1999:blog-8937094893607344014.post-34985537425878958952021-03-22T20:34:00.003-06:002021-03-22T20:34:44.164-06:002021 Week 12: (March 21-March 27)<p>This week in the sky we will have the Moon at its first quarter phase which will showcase some amazing lunar features on the terminator. As the week progresses the Moon will progress to its full phase by Sunday. I have had the opportunity to get outside and see Mars in the northern parts of Taurus and about 7° away from a similar looking Aldebaran, the angry red eye of the bull. Venus will reach superior conjunction, far from the Earth, on March 26 and will progress towards our evening skies in the following months.<br /><br />It is a good time to get outside and view some of the winter Messier objects before they drop below the horizon at sunset. Orion still rules the southwestern sky but not for long. The Orion nebula is still a very attractive sight in any set of binoculars or a telescope. If you want to catch M79, the globular cluster in the south edge of Lepus you're going to watch to do it soon. The same would apply to objects in Canis Major and Puppis.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyBqNGNgKtP32G6iL9Fug0wS_Fd_FxbeLKFKi28JEfqMf47fgF-AIo5638zl2LH4_ms8NgfPBW0xI8ZMkh7xWbUcbUfKVtWZcTujNOMvCtuFOaDjcwaZT5UCVqfWvAIH9236DCpdiOOEI/s1827/Orion+Messier+42.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1429" data-original-width="1827" height="501" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyBqNGNgKtP32G6iL9Fug0wS_Fd_FxbeLKFKi28JEfqMf47fgF-AIo5638zl2LH4_ms8NgfPBW0xI8ZMkh7xWbUcbUfKVtWZcTujNOMvCtuFOaDjcwaZT5UCVqfWvAIH9236DCpdiOOEI/w640-h501/Orion+Messier+42.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Orion Nebula (Image Credit: George Cavanaugh: <a href="https://www.imagingstarlight.ca/">https://www.imagingstarlight.ca/</a>)</td></tr></tbody></table><p>With the winter of 2021 making its hasty retreat the spring constellations are starting to appear. The Beehive Cluster in Cancer was a beautiful sight in my telescope this past weekend. I forgot how bright it was! Just aim your telescope or binoculars to the northwest of Delta Cancri, a magnitude 3.94 star barely visible in urban light pollution. Following the crab is Leo the lion with its bright stars showcased in the southeast sky. I've tried several times to capture the galaxies found within but have had no luck. I will need to get out to a darker site to pull these faint objects in. This brings me to Virgo, the constellation following the lion. Virgo and neighbouring Coma Berenices contain the Virgo Cluster which has 16 Messier members. I have yet to spend time with my telescope in this area but hope to in April.<br /><br />If you are looking to get involved in a hobby that you can safely do in your backyard during a pandemic please consider astronomy. It is a great pastime that will awaken a sense of wonder each and every night. If you'd like to join a society of amateur and professional astronomers who are waiting to help you check out the Royal Astronomical Society of Canada: <a href="https://www.rasc.ca/join">https://www.rasc.ca/join</a><br /><br />Keep looking up at the night sky!</p>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-73333276678420099472021-03-14T15:35:00.001-06:002021-03-22T20:11:01.997-06:002021 Week 11: (March 14-March 20)<p>The weather is warming up and the spring constellations are starting to creep into the late evening sky. I had the opportunity to see Leo crawl in from the southeast toward the south last night. I hope to be able to get outside of the city's light pollution to catch some of the great galaxies the lion sits on.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhdTBKZdw12BsizcIWuA8KZ4wbD4SQRY1QiDFgEnkzRj34eN4lSsfew3PW_qoHHc4ifTzlpFXP5Xo-8vqnIBDG2C-BXl5vwz_ijTAWtfNfSSacrilPKo7r-tkJx4xW3ChYUW1nPa8bcmHA/s640/Leo.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="360" data-original-width="640" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhdTBKZdw12BsizcIWuA8KZ4wbD4SQRY1QiDFgEnkzRj34eN4lSsfew3PW_qoHHc4ifTzlpFXP5Xo-8vqnIBDG2C-BXl5vwz_ijTAWtfNfSSacrilPKo7r-tkJx4xW3ChYUW1nPa8bcmHA/w640-h360/Leo.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Leo</td></tr></tbody></table>This upcoming Saturday, on the 20th, will be the Spring Equinox and the Sun's disk will be, once again, above the northern hemisphere. The days will be longer than the nights so astronomers will have to stay up later each night to enjoy the same dark skies as they had during the winter. On the equinox true night, where the Sun is more than 18° below the horizon will begin at about 9:45pm and last until 5:45am. This is true for Calgary and our friends who hang around the 51° line of latitude.<div><br /></div><div>As the Sun goes down on the evening of March 16 take the opportunity to put it in binoculars. You may see Uranus within the same binocular field just above the crescent lunar neighbour. Three nights later you will see our Moon pair up with Mars within the same binocular field. Poor Mars though has dimmed to magnitude 1.2 and is a measly 5.8 arcseconds in diameter. This pales in comparison to the last opposition in October when it was more than 20 arcseconds in diameter and shined brighter than magnitude -2.5.</div><div><br /></div><div>This Thursday do not miss this free online presentation on uncovering the origin of highest-energy cosmic rays. Everyone can sign up! Use the link below and we hope to see you there!</div><div><br /><a href="https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/276371270/">Uncovering the Origin of Highest-Energy Cosmic Rays</a></div><div><br /><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhFlWOC8NIv1Gd6YeNa0bfV0oZ32jqJoNeOrGLr0qZVtxY3lfyOQUkXV2fyT35mZ-WwKI1vjQ_39IxzSfxfm85kd-Nf_iVqeAKf-SoX9RivGTfkNJZMfKZe2oPzO06xMW-QGCt7JXy2Qt0/s640/RASC_VERITAS_Zoom1_1920x1080+%25281%2529+%25281%2529.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="360" data-original-width="640" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhFlWOC8NIv1Gd6YeNa0bfV0oZ32jqJoNeOrGLr0qZVtxY3lfyOQUkXV2fyT35mZ-WwKI1vjQ_39IxzSfxfm85kd-Nf_iVqeAKf-SoX9RivGTfkNJZMfKZe2oPzO06xMW-QGCt7JXy2Qt0/w640-h360/RASC_VERITAS_Zoom1_1920x1080+%25281%2529+%25281%2529.png" width="640" /></a></div><div><br /></div>Also, if you have any youth members who are interested in learning more about astronomy, the Royal Astronomical Society of Canada hosts classes in partnership with the Calgary Public Library. This classes are an hour long and take place every Saturday morning. If you'd like to search out some of the upcoming classes use the link below.</div><div><br /></div><div><a href="https://calgarylibrary.ca/events-and-programs/programs?query=rasc">https://calgarylibrary.ca/events-and-programs/programs?query=rasc</a><br /><p><br /></p></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-82348299648650944592021-03-09T15:07:00.005-07:002021-03-09T15:07:46.628-07:002021 Week 10: (March 7-March 13)<p>This week those who follow Daylight Savings Time will have to set their clocks forward an hour and we all lose an hour of sleep. As for the sky, Neptune will be in conjunction with the Sun and won't be visible in the morning sky until sometime in April. Our furthest planet still sits in Aquarius where it will be until 2023 when it moves into Pisces. Neptune takes 165 years to orbit our Sun and spends, on average, more than ten years in each Zodiac constellation.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg8Y2YBMpQZWCt6AEKBY8wlP3ybVoDiH3PKmUAtfB0-XC0nBif56rGv-5ujK2G2VQm6ZW27Ud86zIz1MdD34hehP0SU-saxSLWoHDhN1XkrNfawA4pnFJghfDAlN0fBxgkf6sc0A-GdrQg/s368/The_Persistence_of_Memory.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="271" data-original-width="368" height="472" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg8Y2YBMpQZWCt6AEKBY8wlP3ybVoDiH3PKmUAtfB0-XC0nBif56rGv-5ujK2G2VQm6ZW27Ud86zIz1MdD34hehP0SU-saxSLWoHDhN1XkrNfawA4pnFJghfDAlN0fBxgkf6sc0A-GdrQg/w640-h472/The_Persistence_of_Memory.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Daylight Savings Time Begins</td></tr></tbody></table><p>The Moon will reach its new phase very early Saturday morning. This will be a good chance to get out to a dark site to check out the sky without the Moon's brightness polluting the night. The nights are getting warmer as we approach the spring equinox the following week.<br /><br />I am hoping to crack open my sky maps to create a path of least resistance for the Virgo galaxy cluster. There are many Messier objects found within that I have yet to observe. I am aiming for working on this region throughout April and May.<br /><br />There is an amazing free online event taking place next week. Dr. David Kieda from the University of Utah will be giving a talk on "Uncovering the Origin of Highest-Energy Cosmic Rays". Dr. Kieda's work is with a ground based gamma-ray observatory and he will be sharing the research that has been done with this instrument. If you would like to sign up for this event please use the following link.<br /><br /><a href="https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/276371270/">Uncovering the Origin of Highest-Energy Cosmic Rays</a></p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg8dP_ozwaE5pfUxPVCr_YY8oJ5nuSXUXt8Pos1E1hRkz24eDvGaTk0QOZC7PznOCtf488XyRvkAuD2ErjZthC4iAvHI8pMwLt-9YztWtT_Pu1dxgFgXWTwxWynMNPFnWRUP5zy2EgBcww/s2048/RASC_VERITAS_Zoom1_1920x1080+%25281%2529.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1152" data-original-width="2048" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg8dP_ozwaE5pfUxPVCr_YY8oJ5nuSXUXt8Pos1E1hRkz24eDvGaTk0QOZC7PznOCtf488XyRvkAuD2ErjZthC4iAvHI8pMwLt-9YztWtT_Pu1dxgFgXWTwxWynMNPFnWRUP5zy2EgBcww/w640-h360/RASC_VERITAS_Zoom1_1920x1080+%25281%2529.png" width="640" /></a></div><p>If you are interested in getting more involved in astronomy you can join the Royal Astronomical Society of Canada at the link below. You will be joining a society of professional and amateur astronomers who can help you observe the wonders of the night sky above!<br /><br /><a href="https://www.rasc.ca/join">https://www.rasc.ca/join</a><br /><br />Never forget to keep looking up at the night sky!</p>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-50183349004208471522021-02-28T19:59:00.003-07:002021-03-09T14:41:19.263-07:002021 Week 9: (February 28-March 6)<p>This week the zodiacal light will be visible in the dusk twilight skies. This is sometimes referred to as a vertical twilight as it appears as a vertical column of light emanating from the horizon. This is caused by the Sun's light as it scattered by interplanetary dust along the ecliptic. The ecliptic is steep to the western horizon at this time of year for those at northern latitudes. You can see this phenomenon for yourself if you can find some very dark skies and watch the twilight skies after the Sun sets.</p><p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiePEQktWRBNw4fI4PNCwtPP_ReidEw_BwqNq0996AQFo8h5yh6XOl44a3IVSo9PBRbzRh0t1NpYx1pTQ1hxyYY_tcoAISxRvVKyPWLpGH-gmmYAawGHu4SgI5gaxsx_TV_8xVRAEo1FbM/s855/Picture1.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="571" data-original-width="855" height="427" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiePEQktWRBNw4fI4PNCwtPP_ReidEw_BwqNq0996AQFo8h5yh6XOl44a3IVSo9PBRbzRh0t1NpYx1pTQ1hxyYY_tcoAISxRvVKyPWLpGH-gmmYAawGHu4SgI5gaxsx_TV_8xVRAEo1FbM/w640-h427/Picture1.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Zodiacal Light (Image Credit: Dalton Wilson)</td></tr></tbody></table>The large asteroid known as Vesta will be at opposition on Thursday and will shine at magnitude 6.1. It is easily placed in the eastern region of the lion asterism of Leo. It will be just over a degree away from Theta Leonis and they can both fit in an average telescope field of view.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2JLxyXWAmOQj9AyuILZLLZrf0tJVtc2k8OWOYPQCnjajim44HimvmbF4jp2bGpEwnBmQugKD_0wDffck056Z2Li6_3S-1-vwN1E0HZHv41AflSPyd-AdI1ijRd0veop77zOpqmySHk7s/s1057/Pic2.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="670" data-original-width="1057" height="406" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi2JLxyXWAmOQj9AyuILZLLZrf0tJVtc2k8OWOYPQCnjajim44HimvmbF4jp2bGpEwnBmQugKD_0wDffck056Z2Li6_3S-1-vwN1E0HZHv41AflSPyd-AdI1ijRd0veop77zOpqmySHk7s/w640-h406/Pic2.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Vesta (Thursday, March 4, 2021)</td></tr></tbody></table>The Moon will be at its last quarter phase on Friday evening well away from dark skies until it rises around 2am! The nest day Mercury will be at its greatest elongation west and make its best morning apparition for Southern Hemisphere observers. Saturn and Jupiter are still hanging close to the eastern horizon just before sunrise. The ecliptic is quite shallow during morning twilight at this time of year so it may be difficult to see. However, if you catch Jupiter on the morning of Friday March 5 you should be able to see Mercury less than a degree away. Use binoculars and look for the pairing. Just don't use your binoculars too close to sunrise as you do not want to risk harming your eyes.Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-56307378631714194462021-02-21T20:52:00.001-07:002021-02-21T20:52:32.591-07:002021 Week 8: (February 21-February 27)<p>The extremely cold weather has lifted from most of Canada which means we can get outside and look at the night sky in greater comfort. The Moon will be full on Saturday February 27 and will be sitting underneath the tail of Leo. Following Leo into the sky is Virgo with its many galaxies. I'm hoping to turn my telescope on this region of space to locate some of these as I check off my Messier list.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhUVJwygDysyQlV0dl__w5yGDS3Re7KNbX-a-snnxTRKbvQ2wJJLdQ7irK4hX5pPxkMdDLdq1HyI5EytPpRlsuLGYne8jzrL9rcAAx2f-W9wLezAkCYm83QeRGcYaqbgB7wEMd17kLFEWQ/s2048/FM.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1807" data-original-width="2048" height="353" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhUVJwygDysyQlV0dl__w5yGDS3Re7KNbX-a-snnxTRKbvQ2wJJLdQ7irK4hX5pPxkMdDLdq1HyI5EytPpRlsuLGYne8jzrL9rcAAx2f-W9wLezAkCYm83QeRGcYaqbgB7wEMd17kLFEWQ/w400-h353/FM.jpg" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Full Moon</td></tr></tbody></table>The large gas giants of our Solar System are still going to be quite hidden in the morning twilight as the angle of the ecliptic is quite shallow at dawn. Mercury, Venus and Neptune are all hanging out in this area too so if you want to look for planets you'll have to settle for Mars and Uranus. These two planets will be spending some time in Aries at the beginning of the week until Mars crosses over to Taurus on Tuesday. By the end of the week Mars will be in the same binocular field as the Pleiades Star Cluster. They'll be together for the better part of the week after making it a wonderful sight for observers and imagers.<br /><div><br /></div><div>The constellation Orion will be heading off into the western horizon after midnight marking another beautiful winter with this great collection of stars. If you want to catch the Messier objects in this area, including those in Lepus, Canis Major, and Puppis be sure to get on it right away.<br /><br /></div><div>Astronomy has been getting more popular as the pandemic drags on. People are interested in participating in hobbies that are universal but, at the same time, can be done from the backyard. CBC News recently discussed this phenomenon on their Alberta news on February 20, 2021. The last 3 minutes of the clip linked below discuss it.<br /><br /></div><div><a href="https://www.cbc.ca/player/play/1864177219959">https://www.cbc.ca/player/play/1864177219959</a><br /></div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIoseYmcfPC9gO0MP60sHc4jsnSmYS3VQQ0mff0yjBeVsQQdEyKBScTmg4qvpSP2GM9IjWNtisdNbvvhGacik_5Mwzer1TXalNBZIJ8vJ3pMIS99sd9I-t44l3DH1g-XA2EfHTSyu1LNg/s1176/CBC.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="661" data-original-width="1176" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgIoseYmcfPC9gO0MP60sHc4jsnSmYS3VQQ0mff0yjBeVsQQdEyKBScTmg4qvpSP2GM9IjWNtisdNbvvhGacik_5Mwzer1TXalNBZIJ8vJ3pMIS99sd9I-t44l3DH1g-XA2EfHTSyu1LNg/w640-h360/CBC.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">CBC Alberta News</td></tr></tbody></table>I hope you have the opportunity to get out under the night sky to check out the wonders of space. If you're looking for something to do during these pandemic months look no further than right above your head!<br /><div><br /></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-63834754172632589372021-02-14T14:07:00.000-07:002021-02-14T14:07:01.320-07:002021 Week 7: (February 14-February 20)There is hope that Western Canada will come out of its polar vortex to allow astronomers outside without the freezing cold weather! The winter sky is quite beautiful!<br /><br />One of my favourite winter constellations is Gemini. Its asterism represents two brothers from Greek and Roman mythology together in the sky holding hands. It is thought that H.A. Rey, author of Curious George, was the first to connect their hands in artistic impressions.<div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgiUMNaQKyVcFol09R3rYUPQ2kiH11_4Lpz7byyJtxcTOs0VWQ1k_ctNk84_eAE3f_5zb4yS7TAjMxG9DumJ3vAADcDn8y5KiDkrsAgoyqERCQK0IlUN5gk6WSSSTC82sRwjPbFHyMDw9s/s640/gemini.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="360" data-original-width="640" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgiUMNaQKyVcFol09R3rYUPQ2kiH11_4Lpz7byyJtxcTOs0VWQ1k_ctNk84_eAE3f_5zb4yS7TAjMxG9DumJ3vAADcDn8y5KiDkrsAgoyqERCQK0IlUN5gk6WSSSTC82sRwjPbFHyMDw9s/w640-h360/gemini.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Gemini</td></tr></tbody></table><div>You can find this wonderful region of space nearly right above your head in the mid-late evening (8pm-9pm local time). If you can locate Orion, just look a bit above his head and to the east. The twin stars should be unmissable! </div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgoOBEdRUakkFbKfp3gRoR-deQ48403rm4rQB_iqxjkuLaZ08hRwxkfFRxyJ2fc3yv70NxH_L4hq4P9dVaSAdO5Zl_Oh8AtTs58UtEdKsvPqmTAVKB-MBpikjBYPgdm7MXxos-lrRo5_JU/s1095/geminimap.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="664" data-original-width="1095" height="388" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgoOBEdRUakkFbKfp3gRoR-deQ48403rm4rQB_iqxjkuLaZ08hRwxkfFRxyJ2fc3yv70NxH_L4hq4P9dVaSAdO5Zl_Oh8AtTs58UtEdKsvPqmTAVKB-MBpikjBYPgdm7MXxos-lrRo5_JU/w640-h388/geminimap.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Gemini Map</td></tr></tbody></table>Although one Messier object can be found within the borders of Gemini, it is a great one. Messier 35 is an open cluster that really pops into any binocular or telescope field of view. It sits just above the foot of Castor (the northern-most twin).<div><br /></div><div>Another interesting thing about Gemini is that its brightest star, Pollux, forms part of the great Winter Hexagon asterism. Along with other bright star vertices, Capella, Aldebaran, Rigel, Sirius, and Procyon, a large hexagon fills the cold winter sky. This is in contrast to the Summer Triangle that reminds us of warmer times.</div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh09M30fWTUoIIUKrifVVBbYdw6EwvAXoi4C1w2MI_YsplymYPqjsgke4-OFm1iWuvbkdStL9jsXYM4o0__fL1qEj93NRtZ3GrL8R5WFMHnPPsDHH_uSTm1vTb8lf_ytK2ENRG-eOAucqM/s640/W+interHex2.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="473" data-original-width="640" height="472" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh09M30fWTUoIIUKrifVVBbYdw6EwvAXoi4C1w2MI_YsplymYPqjsgke4-OFm1iWuvbkdStL9jsXYM4o0__fL1qEj93NRtZ3GrL8R5WFMHnPPsDHH_uSTm1vTb8lf_ytK2ENRG-eOAucqM/w640-h472/W+interHex2.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Winter Hexagon</td></tr></tbody></table>Look for Gemini and see if you can connect the bright stars to form the Winter Hexagon. If you are feeling very ambitious, throw a pair of binoculars to your eyes and see if you can catch Messier 35 at the foot of Castor.<div><br /></div><div>So, what else do we have going on in the sky this week?<br /><br />Jupiter and Saturn are still kind of hanging out with our big light polluting, yet life giving star, the Sun. These large planets will start to emerge in the morning sky later in the month.</div><div><br /></div><div>Uranus will be fairly close to the Moon during the night of February 17. Observers in the Eastern Hemisphere will be able to see them closer together in the sky. However, by the time the Sun sets, most of North America will be able to see our 7th planet less than 5° from the Moon. Find the Moon in your binoculars or telescope and scan west to see if you can find this lonely grey dot in the sky!</div><div><br /></div><div>The very next night the Moon will be friends with Mars and they will be less than 4° apart in the night sky soon after sunset. You should still be to easily see Mars with the unaided eye at magnitude 0.8. It will be just as bright as the bright red eye of Taurus the Bull, Aldebaran. </div><div><br /></div><div>The next evening, on February 19, the Moon will be at its first quarter phase. This is an excellent time to crack out your low focal length eyepieces and see some great craters up close and personal!</div><div><br /></div><div>How about astronomy events in the news?</div><div><br /></div><div>Wow!</div><div><br /></div><div>We have had two Mars missions enter orbit into our red neighbour. A mission from the United Arab Emirates called 'Hope' was inserted into orbit on Feburary 9, 2021. This is a first for the country and the first Arab mission to Mars. The future is amazing!</div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhsiaGJd43B4FRU0romRdhgJBTCb9r2si-h2Q8_NjL-yzlMf8-23XLGoZPrnCTUBNsbwUQMajEmlG3GNlFSdFqWK2J5GBL4B_JINM9DUU8Ekamh_MIXkaZkh_VGETg_ZbufU56TX-qFxuk/s976/_116947403_exi_1st_image_v2.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="549" data-original-width="976" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhsiaGJd43B4FRU0romRdhgJBTCb9r2si-h2Q8_NjL-yzlMf8-23XLGoZPrnCTUBNsbwUQMajEmlG3GNlFSdFqWK2J5GBL4B_JINM9DUU8Ekamh_MIXkaZkh_VGETg_ZbufU56TX-qFxuk/w640-h360/_116947403_exi_1st_image_v2.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mars (Image Credit: UAESA/MBRSC/LASP/EMM-EXI)</td></tr></tbody></table><div>The very next day the Chinese mission, Tianwen-1 arrived and inserted itself into orbit.</div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivxpU99rCHhZt8slRFFc5lZ5TYNs2w9uWyxrMu_8gSEWjCWtjuUdVWKC0dTpKfC_DaKJanaxF7TksCSntirjIX8VoTeCFU5AFR6CDfTp6V77eYhr16cPIJQ8JcSi7WJPnfZ0RRnGpDqvQ/s1024/tianw.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="908" data-original-width="1024" height="568" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEivxpU99rCHhZt8slRFFc5lZ5TYNs2w9uWyxrMu_8gSEWjCWtjuUdVWKC0dTpKfC_DaKJanaxF7TksCSntirjIX8VoTeCFU5AFR6CDfTp6V77eYhr16cPIJQ8JcSi7WJPnfZ0RRnGpDqvQ/w640-h568/tianw.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mars (Image Credit: China National Space Administration)</td></tr></tbody></table><div class="separator" style="clear: both; text-align: left;">If this isn't enough, NASA is hoping to reach Mars and land on its surface this upcoming Thursday with its Perseverance Rover and Ingenuity helicopter.</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: left;">The future of space exploration is extremely optimistic! Scientific discovery from a diverse array of countries and organizations will only serve to enhance our understanding of the Universe. The world is in this together!</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: left;">If this isn't enough to get excited about we will be having a guest speaker giving a talk on the chemistry on planetary atmospheres. The first ever astrochemist to graduate from Chicago State University, Ashley Walker, will join us for a free, online lecture on February 18, 7:30pm MST. This event is open to EVERYONE. If you would like to sign up for this event please follow the link below. We hope to see you there!</div><div class="separator" style="clear: both; text-align: left;"><br /></div><div class="separator" style="clear: both; text-align: left;"><a href="https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/275832274/">https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/275832274/</a><br /></div><div><br />How are you going to spend time with the night sky this week? I encourage you to brave the cold and take in the clear, crisp night sky!</div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-22003999710897029632021-02-06T20:23:00.001-07:002021-02-06T20:26:38.404-07:002021 Week 6: (February 7-February 13)<p>This week most of Western Canada has been thrust into a deep freeze that is set to last for a couple weeks. Once the snow goes away the cold Winter skies offer some of the clearest views of the heavens. Mars still sits high in the sky, although a fraction of its brightness from last Summer. It sits about as bright as the big red star of Orion, Betelgeuse. Mars is currently in the constellation of Aries and, day by day, it makes its way to northern Taurus. It will meet up with the Pleiades Star Cluster during the first week of March; be sure to dust off your binoculars!<br /><br />On February 8, Mercury will be at inferior conjunction whereby it will be between the Earth and the Sun. The next time us Northern Hemisphere residents will get a good chance to see it will be the middle of May when it sits above the western horizon after sunset. As for the other unaided eye planets they are all sitting around our Sun and are too difficult to see.<br /><br />The Moon will be at its new phase on February 11 and the Chinese New Year will begin the next day. Happy New Year! It will be the year of the Ox.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjek8ZGAYCEXaYnb1RMilwz4HNfd0AHQ-OpRxhXUXBdGvOYxWhr2snpZzsy6owCVi4lVny4DmACVmj4rkticvgk9aPB1oJSKKl-xXCWAR9L6JLTdqtvrPErmTMR3umQg-FmvAmswF8TtNU/s1000/chinesenewyear2021.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="614" data-original-width="1000" height="392" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjek8ZGAYCEXaYnb1RMilwz4HNfd0AHQ-OpRxhXUXBdGvOYxWhr2snpZzsy6owCVi4lVny4DmACVmj4rkticvgk9aPB1oJSKKl-xXCWAR9L6JLTdqtvrPErmTMR3umQg-FmvAmswF8TtNU/w640-h392/chinesenewyear2021.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Happy New Year! (Image Credit: Shutterhshock)</td></tr></tbody></table><br /><p>Astrochemist Ashley Walker will be talking about planetary atmospheres and will highlight that of Saturn's moon Titan! If you haven't already signed up for this free online event you must get on it! This event will take place on February 18 at 7:30pm MST! I hope to see you there!</p><p><a href="https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/275832274/">https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/275832274/</a></p>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-67217236538118716362021-01-30T15:14:00.002-07:002021-01-30T15:14:51.789-07:002021 Week 5: (January 31-February 6)<p>We are now entering the second month of 2021 and the winter constellations are brightening the dark cold of the season. On February 4 the Moon will be at its last quarter and shine brightly in the early morning hours before the Sun rises.<br /><br />I'd like to take a minute and talk about my favourite winter constellations. First of all I would like to revisit the definition of a constellation. It is a region of sky set by specific boundaries much like countries on Earth. It is not specifically the pattern of the stars which is called an <i>asterism</i>.<br /><br />I enjoy turning my telescope and eyes to Taurus. This pattern of stars has, since before the end of the last ice age, been known as a representation of the Bull. I enjoy seeing the Hyades Star Cluster around the bright red star Aldebaran. A loose formation of stars with interesting patterns you can see with the unaided eye and binoculars. The Pleiades star cluster can be found in the northern reaches of the constellation and may appear as a blur of light with averted vision. If you look closely with direct vision you may be able to count 6 or more stars! Through a pair of binoculars or a wide field telescope you can see many more stars and perhaps even a hint of nebulosity. Also, just above the southern most 'horn-star', Tianguan, is the Crab Nebula. It is much smaller than you would imagine based on the images but, with a telescope, intermediate users can find this small blur of light. This 'small blur of light' is actually a supernova remnant leftover from a star that went supernova in 1054.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiFPjRV_Ssg12kts2ijPVdmCK1oU2oypo4LUdv6z7Aslrtu7Rxi-avvNh3HKrFDQUXOsZONudWsxhsLYL77b-XSVWwNcnyNdgzueZLoTVf8Cn-OiO-Gp1ZEFUX0nXseTs3XEmgPR4TGTDo/s1280/Taurus.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="720" data-original-width="1280" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiFPjRV_Ssg12kts2ijPVdmCK1oU2oypo4LUdv6z7Aslrtu7Rxi-avvNh3HKrFDQUXOsZONudWsxhsLYL77b-XSVWwNcnyNdgzueZLoTVf8Cn-OiO-Gp1ZEFUX0nXseTs3XEmgPR4TGTDo/w640-h360/Taurus.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Taurus</td></tr></tbody></table><p>Another favourite constellation of the winter sky is Orion. A very large region of space with the asterism of a hunter located within. The three belt stars of the asterism are well known and many people can quickly pick it out of the cool winter sky. What is fascinating about this belt is that just below you can find the Great Orion Nebula. This is visible as a fuzzy patch of sky with your unaided eye. However, if you turn binoculars or a telescope on this region you will see interstellar gas shining against the blackness of space. This is a great target for beginners to point their telescopes at as is it both easy to find and a rewarding sight.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhADk5btNh-wB-NhCBiIMgLFG655YZ6jL4UVs-x3qf_2HbbSSUNwxfhHSqa4ipt8QQRJygZP8XL8ujecVg-g9NlyaDELxrSQ_MVCG2TuC0EVHGQW1N9-fFnobp00zu8MyGa50sHT7bqcZg/s1280/Orion.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="720" data-original-width="1280" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhADk5btNh-wB-NhCBiIMgLFG655YZ6jL4UVs-x3qf_2HbbSSUNwxfhHSqa4ipt8QQRJygZP8XL8ujecVg-g9NlyaDELxrSQ_MVCG2TuC0EVHGQW1N9-fFnobp00zu8MyGa50sHT7bqcZg/w640-h360/Orion.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Orion</td></tr></tbody></table><p>Coming up later this month the Royal Astronomical Society of Canada will be hosting astrochemist Ashley Walker who will be discussing planetary atmospheres with specific research into Saturn's Moon, Titan. This is a free online event happening on February 18 at 7:30pm MST is for anyone to join and will be well worth the time. Come out and support Ashley and have your questions ready! We hope to see you there. A link to register for this event can be found below.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjNcH2kxEMQgTaHxfCGzQIWOvbAp4cGy3A4KNLTIYl-lXW_8_ERz9exlbi5srQBrW9B5vwbFS7ZuvvDL7eNWkS8n4jYIqnA4JXUTsZM45FnjaSx0jHdKoealvvDEGIMjryalXV5gLVCtXE/s1921/1920x1080_RASC_infrared-transmission-05.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="1081" data-original-width="1921" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjNcH2kxEMQgTaHxfCGzQIWOvbAp4cGy3A4KNLTIYl-lXW_8_ERz9exlbi5srQBrW9B5vwbFS7ZuvvDL7eNWkS8n4jYIqnA4JXUTsZM45FnjaSx0jHdKoealvvDEGIMjryalXV5gLVCtXE/w640-h360/1920x1080_RASC_infrared-transmission-05.jpg" width="640" /></a></div><p><a href="https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/275832274/">https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/275832274/</a><br /><br />I hope you have the opportunity to get out and look at the winter sky. It is dark early and night lasts for many hours, the perfect chance to take in the night sky!</p>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-28502241488142987772021-01-23T22:15:00.000-07:002021-01-23T22:15:02.207-07:002021 Week 4: (January 24-January 30)<p>We are nearly through the first month of 2021 and it has been great for astronomy. The Calgary Centre of the Royal Astronomical Society of Canada just hosted an amazing talk from Berkeley researcher Sarafina Nance. She spoke about supernovae and shared insight on how we can pursue our dreams in the face of the adversity that exists in the world. Next month the Centre will be hosting Ashley Walker, who is the first astrochemist in Chicago State University's history. She will be speaking on planetary atmospheres, specifically the Saturnian moon: Titan. If you are interested in joining this free online lecture you can register at the link below.<br /><br /><a href="https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/275832274/">https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/275832274/</a></p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirq3zKhE_FwcWAc4EORtm8MXSvnqV0SLWHhihiidVcbgcmWHg2kFytHLxeLp16uebII5O_QxZaryw85dWq9xDJ4LZei_bFNhgiYEEfBUVod0bzdsG13pTwr1QsaAqY58gxeF21GSouyIk/s1041/TitanNasa.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1041" data-original-width="1041" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirq3zKhE_FwcWAc4EORtm8MXSvnqV0SLWHhihiidVcbgcmWHg2kFytHLxeLp16uebII5O_QxZaryw85dWq9xDJ4LZei_bFNhgiYEEfBUVod0bzdsG13pTwr1QsaAqY58gxeF21GSouyIk/w400-h400/TitanNasa.jpg" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Titan (Image Credit: NASA)</td></tr></tbody></table><p>What is happening in the sky this week?<br /><br />Mercury will still be visible in the western twilight as it begins to proceed to inferior conjunction in a few weeks. I had the opportunity to go out and observe the diminutive inner planet. I saw it slowly cutting through the dusk twilight around 5:45pm local time. It became very bright and easily visible to the unaided eye. It was up on a ridge with the Bow River below and the mountains in the distance. Three does and a large buck appeared out of the brush in front of me and curiously watched me as I stared into the sky. <br /><br />On Monday night the Moon will be in conjunction with one of my favourite open clusters, M35. This cluster is located at the foot of Castor in the constellation Gemini. The image below shows a wide-field telescope and a basic binocular field of view just after 6pm MST. All you need to do is put the Moon in a set of binoculars and see the beautiful cluster located just to the west.<br /><br /></p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhnn2_kWDgmFe3nUwV2pEZivwJqg2LA53GRtwKMWsybxcelqsrk3Lx2CI92Hee_QSUKwZcdQrgQ5fdmYd5UZgWXijRfOBfUamQ1W2R4niPZ5BqxDtp9p2WRuSGuXlJXDSgFEfmcMKbtTSA/s961/M35Moon.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="649" data-original-width="961" height="432" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhnn2_kWDgmFe3nUwV2pEZivwJqg2LA53GRtwKMWsybxcelqsrk3Lx2CI92Hee_QSUKwZcdQrgQ5fdmYd5UZgWXijRfOBfUamQ1W2R4niPZ5BqxDtp9p2WRuSGuXlJXDSgFEfmcMKbtTSA/w640-h432/M35Moon.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Moon/M35 Conjunction (January 25, 6:00pm MST)</td></tr></tbody></table><br /><p>This past Saturday, on January 23, Saturn was in conjunction with the Sun. A few days later, on January 28, Jupiter will be in conjunction with the Sun. We will be unable to see these planets for awhile as the light from the Sun hinders our ability to observe them. Later in February you will begin to see them in the dawn twilight.</p><div>I suggest you check out the RASC Calgary social media and webpage to learn more about the great astronomy activities that are held by our Centre. All of our online events can be broadcast worldwide so you don't have to live in Calgary to participate! Also, follow me on my personal Facebook page at:</div><div><br /></div><div><a href="https://www.facebook.com/simonjastronomy">https://www.facebook.com/simonjastronomy</a><br /></div><div><br /></div><div>Stay warm, stay safe, and always keep looking up in wonder!</div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-57754991094545911482021-01-17T14:43:00.001-07:002021-01-17T14:46:08.702-07:002021 Week 3: (January 17-January 23)<p>The Royal Astronomical Society of Canada, Calgary Centre is excited this week as we will be hosting an astrophysicist, Sarafina Nance, from The University of California, Berkeley to discuss the lives, deaths and explosions of massive stars! You can register for this free event at the following link. It will take place on January 21, 2021 at 7:30pm MST. <br /><br /><a href="https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/275513173">https://www.meetup.com/The-Calgary-Astronomy-Meetup-Group/events/275513173</a><br /><br /></p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJFJGeMjw6kXzJqSiWDZRI1nDo-ifc-jktrLrk7JOiwtnnZnfDNzvkyMmHRKwSHKmDLtSAA7Iya8ucxGlyzlFCtlbIQ_jl8xINvvBfAV_A-e4Ak7ec0yIg-InfeYatfZqM_5osOhDQqrI/s864/cassa.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="864" data-original-width="864" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiJFJGeMjw6kXzJqSiWDZRI1nDo-ifc-jktrLrk7JOiwtnnZnfDNzvkyMmHRKwSHKmDLtSAA7Iya8ucxGlyzlFCtlbIQ_jl8xINvvBfAV_A-e4Ak7ec0yIg-InfeYatfZqM_5osOhDQqrI/w400-h400/cassa.jpg" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Cassiopeia A Supernova</td></tr></tbody></table><br />This is a free event for anyone to attend to learn more about supernovae. Sarafina is a brilliant scientist and an excellent science communicator. She recently teamed up with Seeker to discuss constellations and why zodiac constellations are still used in astronomy. A link to this video is provided below.<div><br /></div><div class="separator" style="clear: both; text-align: center;"><iframe allowfullscreen="" class="BLOG_video_class" height="335" src="https://www.youtube.com/embed/IfqBQOxqALQ" width="559" youtube-src-id="IfqBQOxqALQ"></iframe></div><br /><div>The sky this week will contain some gems for those who take the opportunity to look up! The Moon will be at its first quarter phase this Wednesday. The first quarter is always my favourite phase because it is in a dark sky at a reasonable time of the evening. Also, the terminator (region between dark and light) intersects some amazing features on the lunar surface. The shading from the terminator line helps you to see greater details on these features that you would not see when they are fully illuminated. Take a pair of binoculars or a telescope, if you have one, and look at our celestial neighbour and compare what you see to a lunar map!</div><div><br /></div><div>The next evening we will be in for a treat. Not only will Sarafina be speaking to us but Mars and Uranus will be in a close conjunction. Look just below Aries (one of the constellations Sarafina speaks about in her video) and you should easily be able to see Mars with the unaided eye. </div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjItqhWTcJ8Vv8XxhyiLqZ1ANiO4Z439vcXZMlTDKtaYKZLQIzGNk5dx2FQevoNgFzD6Q-MugZWuWXuEHKi3DUdk4Dnj0Y5Q_AlK37nFKXtheDjpyFQB-P6B-rwUZ3FkaCjwqCdS7klx-4/s1067/Screenshot+2021-01-17+142332.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="672" data-original-width="1067" height="404" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjItqhWTcJ8Vv8XxhyiLqZ1ANiO4Z439vcXZMlTDKtaYKZLQIzGNk5dx2FQevoNgFzD6Q-MugZWuWXuEHKi3DUdk4Dnj0Y5Q_AlK37nFKXtheDjpyFQB-P6B-rwUZ3FkaCjwqCdS7klx-4/w640-h404/Screenshot+2021-01-17+142332.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mars/Uranus Conjunction (January 21, 2021)</td></tr></tbody></table><br /><div>Once you have found the red planet put it in the field of view of any pair of binoculars and you should see Uranus just to the south.<br /><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsL_fL7_oEpPxbWu89YTLIDZ2psZyEQWsOCVKXlFzUtu4AMc0a2TnynZhfQcoVRCyHu-01c7n2gErxHDu36LVbcKXnDQRDE7G3iTJ03zq2aHOm0hlzTpc1T2l3VY4M7tqlYqfFpEf7mHQ/s446/Picture2.png" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="438" data-original-width="446" height="628" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgsL_fL7_oEpPxbWu89YTLIDZ2psZyEQWsOCVKXlFzUtu4AMc0a2TnynZhfQcoVRCyHu-01c7n2gErxHDu36LVbcKXnDQRDE7G3iTJ03zq2aHOm0hlzTpc1T2l3VY4M7tqlYqfFpEf7mHQ/w640-h628/Picture2.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mars/Uranus Conjunction Fields of View</td></tr></tbody></table><br /><div class="separator" style="clear: both; text-align: left;">Something else you may wish to check out is trying to glimpse our diminutive friend Mercury in the dusk twilight. Mercury reaches its greatest elongation east from the Sun during sunset on the 23rd and should be easy to spot at magnitude -0.5. After sunset look in the area the Sun dropped below the horizon and you should see something that will appear as a 'star-like' object. It will be the brightest visible object in the area. This will be the unaided eye view of Mercury. If you have binoculars or a telescope see if you can put this planet in your field. However, if you're going to use optical aid be sure to wait until the Sun is <u>fully</u> below the horizon.<br /><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCoY4rEvZewYWVVHaWpQr6CQJyubmNggChOErpWDVINnKyK0HXCggiVlm0GUyZ7RTayD-hniSA_8jZG55M9YYoqmQlNSsdj8JffnwRAKo_Fu6TNMWXA_5bTP6WoJtqMJaHuwf4CboYVHQ/s805/Merc.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="547" data-original-width="805" height="434" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhCoY4rEvZewYWVVHaWpQr6CQJyubmNggChOErpWDVINnKyK0HXCggiVlm0GUyZ7RTayD-hniSA_8jZG55M9YYoqmQlNSsdj8JffnwRAKo_Fu6TNMWXA_5bTP6WoJtqMJaHuwf4CboYVHQ/w640-h434/Merc.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mercury in Dusk Twilight (January 23, 2021)</td></tr></tbody></table><br /><div>As you can see from the image above both Saturn and Jupiter will be in conjunction with the Sun on January 23 and January 28 respectively. They will slowly start to appear in the morning sky late in February and early March.<br /><br />I suggest you check out the RASC Calgary social media and webpage to learn more about the great astronomy activities that are held by our Centre. All of our online events can be broadcast worldwide so you don't have to live in Calgary to participate! Also, follow me on my personal Facebook page at:</div><div><br /></div><div><a href="https://www.facebook.com/simonjastronomy">https://www.facebook.com/simonjastronomy</a><br /></div><div><br /></div><div>Stay warm, stay safe, and always keep looking up in wonder!</div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-63672546011684857162021-01-09T19:30:00.000-07:002021-01-09T19:30:00.433-07:002021 Week 2: (January 10-January 16)<p>I wouldn't say that 2021 is off to a good start but hopefully we can take some solace in the night sky above. The fun this week is happening in the twilight skies as several of the planets will hang out all close together.<br /><br />Look toward the dusk twilight skies this week to find Jupiter, Saturn and Mercury having a party in the same binocular field of view. You may actually need binoculars to see Saturn and Mercury as they will be dimmer and a little bit lower in the sky. If you are going to use binoculars in this region of the sky make sure the Sun has fully set below the horizon. There is no way you want to look at the Sun through binoculars or even the unaided eye. The map below shows the party of planets at 4:50pm local time. Look for this Sunday and Monday evening this week!</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiHvxm_MKphJfkGWj1Ra-5QYaHGFpwYEmLAnvwEsVdMhDS9sk20Wt3fXRzclLjD4D_8t3yD6S-Ay_5JyF6iAGXRMQS8BWLNh4ASchVyU6Kqr1YhkJ7Je2cMT6BUzH96uzovZhy7cTieeT0/s1178/Conjunction.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1015" data-original-width="1178" height="552" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiHvxm_MKphJfkGWj1Ra-5QYaHGFpwYEmLAnvwEsVdMhDS9sk20Wt3fXRzclLjD4D_8t3yD6S-Ay_5JyF6iAGXRMQS8BWLNh4ASchVyU6Kqr1YhkJ7Je2cMT6BUzH96uzovZhy7cTieeT0/w640-h552/Conjunction.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mercury, Jupiter, Saturn Conjunction</td></tr></tbody></table><p>If you are a morning person check out the dawn sky before the Sun rises. If you can find Venus on Monday morning put it in binoculars and see if you can see the waning crescent Moon. The Moon will actually be dimmer than Venus at this time due to it being so very close to a New Moon, reaching this phase late Tuesday night. Again do not use binoculars if the Sun is moments from rising above the horizon. The map below is for approximately 7:50am local time Monday morning.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiC2jaQllaAxyztYsoDq4M5jKSvbhFLvR-xLbLAodpCVMkCW54DpQdreG_zHtMuggPtGcRcurC4n8siibw6yxkL-R3GMSdMAwWC08qUqyzSt2k0qnRm6NFtzQiEUZ8utkXjftqz3KBaeFY/s1770/Conjunction2.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1356" data-original-width="1770" height="490" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiC2jaQllaAxyztYsoDq4M5jKSvbhFLvR-xLbLAodpCVMkCW54DpQdreG_zHtMuggPtGcRcurC4n8siibw6yxkL-R3GMSdMAwWC08qUqyzSt2k0qnRm6NFtzQiEUZ8utkXjftqz3KBaeFY/w640-h490/Conjunction2.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Moon, Venus Conjunction</td></tr></tbody></table><p>Several days later on the evening of Thursday, January 14 you may catch the slight waxing crescent Moon in the dusk twilight. The planets Mercury, Jupiter and Saturn have spread out a little bit from the other evening and the Moon is now in the mix forming a line down to the Sun. After the Sun has gone down look around this area with binoculars to see if you can catch all 4 objects in our twilight sky. The map below is for 5:00pm local time.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgdwPRW5zXhUSljdUnnvc26Tb5QE0SjpkmZP8e5mQxYpmoLxCotYPwPw7ou85KTk6_pATogqSbWtyTZ9dwhNv2_RU0Q8jVcJ4op0G8jF3c-WeRw4U5SqjwG4xDBK9f3ZlwKjSojBf-g6P4/s1347/Conjunction3.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1001" data-original-width="1347" height="476" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgdwPRW5zXhUSljdUnnvc26Tb5QE0SjpkmZP8e5mQxYpmoLxCotYPwPw7ou85KTk6_pATogqSbWtyTZ9dwhNv2_RU0Q8jVcJ4op0G8jF3c-WeRw4U5SqjwG4xDBK9f3ZlwKjSojBf-g6P4/w640-h476/Conjunction3.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Moon, Mercury, Jupiter, Saturn Conjunction</td></tr></tbody></table><p>There isn't too much else special happening in the sky. Uranus will be stationary on the 14th which isn't very exciting except for sounding inappropriate at dinner parties. It will once again begin its prograde motion and appear to move eastward relative to the background stars. It can still be found within the borders of Aries pairing up in the same binocular field as our red friend Mars. Look directly above around 7:00pm local time to find Mars shining brightly. Put Mars in your binoculars and see if you can see Uranus in the same field to the east.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiFa616KGQBw1qdpinowY4coWjBdJcy_UM_gF7OpJbddm4Ia5OKdE3L5Sic3EqGuzsYoynKf3DCLB42H8J9R8dzKiyiQT5D71ymXpr3sidPpEFHAXYlPsrEulCQEWvOm3jqOH81emMMi7k/s1502/MarUr.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1127" data-original-width="1502" height="480" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiFa616KGQBw1qdpinowY4coWjBdJcy_UM_gF7OpJbddm4Ia5OKdE3L5Sic3EqGuzsYoynKf3DCLB42H8J9R8dzKiyiQT5D71ymXpr3sidPpEFHAXYlPsrEulCQEWvOm3jqOH81emMMi7k/w640-h480/MarUr.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mars, Uranus Conjunction</td></tr></tbody></table><br />I use the term 'conjunction' rather loosely as a close combination of objects throughout this blog and should clarify. A true conjunction between two astronomical objects occurs when they have the same right ascension or the same ecliptic longitude as observed from Earth. This happened with Jupiter and Saturn a few weeks ago.<br /><br />Astronomy is a great hobby and profession that you can enjoy all over the world. It can be enjoyed during a pandemic and during more regular times. Follow me on Facebook for all the latest astronomy news and online events that you can freely participate in!<div><br /></div><div><a href="http://www.facebook.com/simonjastronomy">www.facebook.com/simonjastronomy</a><br /><p>Stay safe and always look up at the night sky!</p></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-28707423087115160642021-01-01T16:48:00.002-07:002021-01-01T16:51:41.794-07:002021 Week 1: (January 3-January 9)<p>As we start a new year, let's see what is in our night sky week by week. The Earth will be at perihelion on January 2 which is its closest the Earth gets to the Sun in its orbit. This is approximately 147 million kilometers. Compare this to the aphelion in July when the Earth is 152 million kilometers from the Sun. This occurs because the Earth is in an <i>elliptical</i> orbit around the Sun. The Sun is located at one of the foci of the ellipse.</p><p><br /></p><p>Do not confuse the distance of the Earth to the Sun with the seasons as they occur due to the <i>tilt</i> of the Earth. When the Earth is in its orbit around the Sun with the Northern Hemisphere tilted toward the Sun it will be Summer in that hemisphere and vice-versa 6 months later.</p><br /><p>The first week of the year always starts out with a meteor shower. The Quadrantid Meteor Shower will peak in the morning of the 3rd. Your best chance to see them would be either Saturday or Sunday evening. Unfortunately, the Moon will be around 80% illuminated it may hinder the observation of these meteors. If you are lucky you may be able to catch one every 10-15 minutes. Unlike other meteor showers, the Quadrantid peak is very narrow and you'll likely only have one good night of trying to observe one.</p><br /><p>For more details on the Quadrantid Meteor Shower follow the link below.</p><br /><p><a href="http://simonjastronomy.blogspot.com/2017/12/the-quadrantid-meteor-shower.html">Quadrantid Meteor Shower</a><br /></p><br /><p>In the middle of the week the Moon will be at its last quarter phase rising just after midnight.</p><br /><p>If you liked the conjunction from last month of Saturn and Jupiter you may like the one occurring at the end of this week!</p><br /><p>Mercury, Jupiter and Saturn will all be within a 2.3° circle near the western horizon shortly after sunset. They will all fit into a widefield telescope or an ordinary pair of binoculars. If you are going to be using optical aid on this conjunction <b>be sure</b> the Sun has fully set; it is not worth damaging your eyes.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1jNVsiuF03NI_aY81fD_JNehm2Ze19kOspcNDh-oP6bXLN6GDebpquR96J-3T-3yb4_pLMRRKyWVgwvxi5KkY5FCjYWSvuaqjPtRc6TJsY1YZ9WeSdGuj6ua7qXz9kXn6SV_4nswO0Gg/s916/Picture1.png" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="532" data-original-width="916" height="372" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi1jNVsiuF03NI_aY81fD_JNehm2Ze19kOspcNDh-oP6bXLN6GDebpquR96J-3T-3yb4_pLMRRKyWVgwvxi5KkY5FCjYWSvuaqjPtRc6TJsY1YZ9WeSdGuj6ua7qXz9kXn6SV_4nswO0Gg/w640-h372/Picture1.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mercury, Jupiter, Saturn Conjunction January 10-11</td></tr></tbody></table><p><u>Coming later this month...</u></p><br /><p>On January 21, 2021 at 7:30pm, Sarafina Nance from the University of California - Berkeley will be giving a free lecture on "<b><i>Tracing the Lives, Deaths, and Explosions of Massive Stars</i></b>".</p><br /><p><span style="font-family: inherit;">Supernovae are cosmic events of gigantic power. Their explosions can shine as bright as a galaxy, a pinprick of extraordinarily bright light in the night sky. What is less well-understood, however, is which stars reach the point of explosion and how they evolve to their deaths. Interestingly, their explosions provide astronomers with key tools to uncover fundamental aspects of our Universe. While we know that the Universe is expanding at an accelerated rate due to dark energy, the rate of the expansion of the Universe is not well-constrained. Supernovae provide us with independent ways to measure this expansion and work to resolve one of the most pivotal questions in astronomy: How fast is the Universe really expanding?</span></p><p><br /><span style="font-family: inherit;"></span></p><div class="separator" style="clear: both; text-align: center;"><span style="font-family: inherit;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBZ-dY-iof6Hs73NWb1qBclJ-ijKZ6sHiy9NR6gst5ciKrbkbpkrAADoBMCMjxkV1Z3LZDtA19GaEx9-Dq-I-MMmiBdK64F8Mx9SYJLTuWVqpNCvoZZ0hO9jgVYJNxj02WPYj2ITdPU2U/s1201/Sarafina.jpg" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="801" data-original-width="1201" height="266" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBZ-dY-iof6Hs73NWb1qBclJ-ijKZ6sHiy9NR6gst5ciKrbkbpkrAADoBMCMjxkV1Z3LZDtA19GaEx9-Dq-I-MMmiBdK64F8Mx9SYJLTuWVqpNCvoZZ0hO9jgVYJNxj02WPYj2ITdPU2U/w400-h266/Sarafina.jpg" width="400" /></a></span></div><p></p><br /><p><span style="font-family: inherit;">I hope you can join us for this great event, for more details follow the link below.</span></p><br /><p><a href="https://calgary.rasc.ca/speakers2021.htm#janGM">Tracing the Lives, Deaths, and Explosions of Massive Stars</a><br /><br /></p><p>Follow on Facebook for all the latest Astronomy related news and activities!<br /><br /><a href="www.facebook.com/simonjastronomy">www.facebook.com/simonjastronomy</a><br /></p>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-45299881249124498232020-12-05T16:15:00.001-07:002020-12-05T16:15:28.871-07:00Jupiter/Saturn Conjunction 2020<p>We are in for a treat this year with a planetary conjunction of our Solar System's two largest planets--Jupiter and Saturn. This is an event that occurs on average every 19.6 years. Due to the tilt of the orbital planes of the two planets they may seem to go above or below each other. This year Jupiter will appear just south of Saturn. The minimum distance separating them will be approximately 6 arcminutes. The Full Moon is about 30 arcminutes so the separation between the two planets will be about 1/5 the diameter of a Full Moon.</p><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBssjwKlQFB5rssYRVvQX0ZbTTOk7_nxAb_ov6ORtMLt7NQ6xiXOT07eBONXeRsfrGRloGp2bnyF7jR6_3k0Tv61AzyL8XjKg6DSMVUdkUEeNzfT9uPj2Dm85405HqTXJsn9IF29e0sqk/s388/SatuJup.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" data-original-height="181" data-original-width="388" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBssjwKlQFB5rssYRVvQX0ZbTTOk7_nxAb_ov6ORtMLt7NQ6xiXOT07eBONXeRsfrGRloGp2bnyF7jR6_3k0Tv61AzyL8XjKg6DSMVUdkUEeNzfT9uPj2Dm85405HqTXJsn9IF29e0sqk/s320/SatuJup.png" width="320" /></a></div><p>If you look to the southwestern sky after sunset you will see Jupiter and Saturn low but visible to the unaided eye. Jupiter is more southerly and westerly than the ringed planet. Watch each night as they appear to get closer to one another in the sky. Don't worry: they are separated radially by several hundred million kilometers so they won't bump into each other!</p><p>On December 21, at sunset, they will be at their closest separation since 1623. In 1623 however, they appeared closer to the Sun so it was more difficult to see even with the decade old invention of the telescope.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrmarviDRpYwPlU5WsV4ilb2pDyoEPvPTa9O7mNhedidgGueC4c4pmDSvd1pm_p9hetiG_-OdS0GlAkQqhxIg1b4eSGuTxIKTSL3FCUuw3FAbHPXQvidOki5XkcMBaDKek2RkqtJydBnw/s1236/conj1.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="751" data-original-width="1236" height="388" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhrmarviDRpYwPlU5WsV4ilb2pDyoEPvPTa9O7mNhedidgGueC4c4pmDSvd1pm_p9hetiG_-OdS0GlAkQqhxIg1b4eSGuTxIKTSL3FCUuw3FAbHPXQvidOki5XkcMBaDKek2RkqtJydBnw/w640-h388/conj1.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Jupiter/Saturn Conjunction - December 21, 2020</td></tr></tbody></table><p>Don't be concerned if it is cloudy or you forget, they will be very close to each other for several days before and after the 21st. They will fit into most telescope fields of view for more than a week before and after and the same binocular field for a month before and after! The fields of view of average astronomy equipment are shown below for December 21.</p><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8jqljOI5pSuEGhXNoqThoCY0EUI2s9cd3idIf7_P3A3dW9hZxdCepF90InsxvQTKseVeQOjuBrsJftHGhmkCP8kWqUcz7PFWkGn5wSlmnrluQ7aAWx1zg9ipOAQ3HbIVjdqEuHJPnp2g/s828/conj2.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="791" data-original-width="828" height="612" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh8jqljOI5pSuEGhXNoqThoCY0EUI2s9cd3idIf7_P3A3dW9hZxdCepF90InsxvQTKseVeQOjuBrsJftHGhmkCP8kWqUcz7PFWkGn5wSlmnrluQ7aAWx1zg9ipOAQ3HbIVjdqEuHJPnp2g/w640-h612/conj2.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Jupiter/Saturn Conjunction Fields of View</td></tr></tbody></table><div><br /></div><div>The conjunction occurs at declination of -20.5° which means it will not be visible to those few hundred thousand people living in the cold northern climes above 69.5°N latitude. In the south, the Sun is at -23.5°S so those below 66.5°S latitude are experiencing permanent Summer sunlight and will not be able to see the event without specialized equipment. Anyone close to those latitudes will certainly have a lot of trouble seeing the event. </div><div><br /></div><div>However, it will be visible to those with clear skies at any longitude in between these latitudes. At any given time during the year the Earth faces the same area of the sky and anyone at the same latitude will see the same thing at the same local time. The sky at 5pm in Calgary will be very similar to 5pm in London, England as they are both approximately 51°N. </div><div><br /></div><div>Is this an event that only happens once? No. As mentioned above these two planets are in conjunction every 19.6 years. Sometimes they are closer, sometimes they are further away from each other. In the 7000s CE they will be so close that Jupiter will eclipse Saturn! Are planetary conjunctions rare in general? No. There will be three conjunctions in January 2021: (Mercury/Jupiter, Mercury/Saturn, Mars/Uranus).</div><div><br /></div><div>Major and Minor News Outlets have not been completely accurate in their reporting of this event so it is best to ask a local astronomer if you have any questions related to this conjunction or any other event that happens in the night sky. Misinformation is breeding on social media due to inaccurate reporting so before you share anything please fact check.</div><div><br /></div><div>Follow us on Facebook at: <a href="http://www.facebook.com/simonjastronomy">https://www.facebook.com/simonjastronomy</a></div><div>or Twitter: <a href="https://twitter.com/SimonJAstronomy">https://twitter.com/SimonJAstronomy</a></div><div><br /></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-24040195947919108072020-11-10T18:29:00.000-07:002020-11-10T18:29:39.889-07:00Explore the Moon - Ptolemaeus<p> <u><b>Background</b></u></p><br />The crater Ptolemaeus is located close to the center of the nearside of the Moon just south of Sinus Medii. It lies directly south of the crater Herschel. The crater is named after the famous astronomer Claudius Ptolemy. Many books have been written on Ptolemy's contributions to science and he remains one of the most important astronomers in history. He was born in Egypt around 100 A.D. and spent his time in Alexandria. He published the famed "Almagest" which contains a record of ancient historical astronomical models of the sky. He lists 48 constellations which has been converted into our modern system of delineating regions of the sky.<div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPQCP7KTcftkfBxu2ArX0AwQZTigDpvrQ5lX-4gfWHoLeYFG9ahJj68zMVaI1Sk7gN6W8pYouVuJgIB9zD9eDB8WfjT95TSSzmtiMehXmBNonsyOs7DFqYGLCZBLqvDd0kvKKo2z-zpj0/s1012/AS16-M-0990.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1012" data-original-width="1012" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgPQCP7KTcftkfBxu2ArX0AwQZTigDpvrQ5lX-4gfWHoLeYFG9ahJj68zMVaI1Sk7gN6W8pYouVuJgIB9zD9eDB8WfjT95TSSzmtiMehXmBNonsyOs7DFqYGLCZBLqvDd0kvKKo2z-zpj0/s320/AS16-M-0990.jpg" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Herschel (Image Credit: NASA Apollo 16)</td></tr></tbody></table><br /><div><br /></div><div>Ptolemaeus is a fairly large crater with a diameter of 154km and a depth of 2,400m. </div><div><br /></div><div><div><div><u><b>Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-05-29</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 23:56</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>Ptolemaeus is larger than its neighbouring craters Hipparchus and Albategnius. It appears flooded which would mean it is a fairly old crater. There is a crater on the northeastern quadrant of the floor visible and named Ammonius. The southern edge of the rim is broken by neighbouring Alphonsus.</div></div><div><br /><div><u><b>Location</b></u></div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object #75, highlighted below.<br /><br /></div></div></div><div></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjDUdxLxoqelLwrCRifFeJYjgBNceSH9qnxJpjXfDT8P9Eqgd6zNZHEAlpHD3lULEGnOnPymwJTdo8URJVUIctaqXwXop0msaYk4OoaKXBF7hENFD31Mp-c3vjcgeLa_jU0B1m7-e2Ujbo/s1489/Ptolemaeus.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1489" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjDUdxLxoqelLwrCRifFeJYjgBNceSH9qnxJpjXfDT8P9Eqgd6zNZHEAlpHD3lULEGnOnPymwJTdo8URJVUIctaqXwXop0msaYk4OoaKXBF7hENFD31Mp-c3vjcgeLa_jU0B1m7-e2Ujbo/w640-h630/Ptolemaeus.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Ptolemaeus (Crater)</td></tr></tbody></table><br /><div>The image below is a view from the Apollo 12 mission. The Apollo 12 lunar module, Intrepid, can be seen descending to the lunar surface. Ammonius is clearly visible in the foreground with Herschel off the the right of the image.</div><div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSUE7B6gM47tP5zTLxufrvH9Gtvd7_Y_RocDinat-ASBt8g2uL00W7-WPi67grC5M5oJzwtd5NG7hQaGV4amu8-imuj0rCQ-3X1hcvrrY1WvfQftHDQ91psZvW24M7YGhLqNNjtT-QPZs/s1930/1920px-Lunar_module_AS12-51-7507.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1930" data-original-width="1920" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhSUE7B6gM47tP5zTLxufrvH9Gtvd7_Y_RocDinat-ASBt8g2uL00W7-WPi67grC5M5oJzwtd5NG7hQaGV4amu8-imuj0rCQ-3X1hcvrrY1WvfQftHDQ91psZvW24M7YGhLqNNjtT-QPZs/w398-h400/1920px-Lunar_module_AS12-51-7507.jpg" width="398" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Ptolemaeus (Image Credit: NASA Apollo 12)</td></tr></tbody></table><div><br /></div></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-91397382828903724972020-08-27T22:07:00.000-06:002020-08-27T22:07:06.091-06:00Explore the Moon - Herschel<u><b>Background</b></u><br /><br />The crater Halley can be found directly south of Hipparchus near the center of the nearside of the Moon. The crater is named after the English astronomer, Edmond Halley. Halley is probably most famous for calculated the periodicity of his eponymous comet. Halley was a contemporary of Isaac Newton and they worked together on the physics of gravity. Halley even funded the publication of Newton's Magnus Opus, <i>Philsophiae Naturalis Principia Mathematica</i>. He voyaged to the Southern Hemisphere to map the stars as Flamsteed had mapped the Northern Hemisphere.<div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgRYBUHjPfKtBSByqPjKDA5pctSis8TE78NK5x5e6wfJ2pKWIJj9PYkGRbAARzKvqeQVicAYyP2OG3O9ErqS5UvN_a0Nz9r9pqVhbFz-7DO7L2wLelkqk86KmQRzIyxkYw81pTKxVvfgaQ/s2467/Herschel.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="2224" data-original-width="2467" height="360" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgRYBUHjPfKtBSByqPjKDA5pctSis8TE78NK5x5e6wfJ2pKWIJj9PYkGRbAARzKvqeQVicAYyP2OG3O9ErqS5UvN_a0Nz9r9pqVhbFz-7DO7L2wLelkqk86KmQRzIyxkYw81pTKxVvfgaQ/w400-h360/Herschel.jpg" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Herschel (Image Credit: NASA Apollo 12)<br /></td></tr></tbody></table><div><br /></div><div>Herschel is a moderately sized crater with a diameter of 41km and a depth of 3,770m. </div><div><br /></div><div><div><div><u><b>Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-05-29</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 23:51</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>Herschel can be found just north of the large crater Ptolemeus. The crater appears to be fairly deep with ridges visible around the edge. There is a clear central peak formation. A valley was observed to the east of the crater. There are two smaller craters to the southwest and northwest 90° from each other.</div></div><div><br /><div><u><b>Location</b></u></div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object #53, highlighted below.</div></div></div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGnmb1PTf8pVmJif1gNOPm0LTfclHpIdjuvZGBDxGUb3y17a67srMeAHIbgetW-d65CyqwhT_fp8W6_U21xXma6jhpraymkz3foqw1S-nGaDpoPrMUnKvox8y0y9KSjUed93N4ia5LFh0/s1490/HerschelMap.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGnmb1PTf8pVmJif1gNOPm0LTfclHpIdjuvZGBDxGUb3y17a67srMeAHIbgetW-d65CyqwhT_fp8W6_U21xXma6jhpraymkz3foqw1S-nGaDpoPrMUnKvox8y0y9KSjUed93N4ia5LFh0/s640/HerschelMap.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Herschel (Crater)<br /></td></tr></tbody></table><br /><div>The image below is another great view from the Apollo 12 mission. The crater just above Herschel is known as Herschel C with a diameter of 10km and just below that is Herschel X with a diameter of 3km.</div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBCyHgV5pgN1qnICPzTc2mbwwn4mEfNqRLTcoXxHqfFJzqcc8CFCsoAKPUNyuUbMsgS3E6DqcADTHN4Cto4s_uCbxHJcMTGn10tBHMd8TN52BVAKtK8BLHuFK43hwuYrNkZiP9ZSQlrcM/s800/HerchelA12.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="716" data-original-width="800" height="359" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgBCyHgV5pgN1qnICPzTc2mbwwn4mEfNqRLTcoXxHqfFJzqcc8CFCsoAKPUNyuUbMsgS3E6DqcADTHN4Cto4s_uCbxHJcMTGn10tBHMd8TN52BVAKtK8BLHuFK43hwuYrNkZiP9ZSQlrcM/w400-h359/HerchelA12.jpg" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Herschel (Image Credit: NASA Apollo 12)<br /></td></tr></tbody></table><div><br /></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-39941140848281459262020-06-28T17:25:00.002-06:002020-06-28T17:25:39.411-06:00Explore the Moon - Sinus Medii<u><b>Background</b></u><br /><br />Sinus Medii (Bay of the Centre) can be found, as the name suggests, right in the centre of the nearside of the Moon. Its flooded floor has the origin of the Moon's coordinate system. It is located south of Mare Vaporum and north of Ptolemaeus. <div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7MVxnFExduVOWvGvd1uxsYZ-F_3Y7WOguGc2BuviOSF3BjosLFjOTKBD4C3cp-Keni1Srb_yOvzREtc5pfDghB2Z3otFT6Lnd6R-GqqCx8OhSFr_01_9Mx1K4DO5ndQNNJKK1t6c_7us/s2320/Sinus_Medii_%2528LRO%2529.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1742" data-original-width="2320" height="300" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7MVxnFExduVOWvGvd1uxsYZ-F_3Y7WOguGc2BuviOSF3BjosLFjOTKBD4C3cp-Keni1Srb_yOvzREtc5pfDghB2Z3otFT6Lnd6R-GqqCx8OhSFr_01_9Mx1K4DO5ndQNNJKK1t6c_7us/w400-h300/Sinus_Medii_%2528LRO%2529.png" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Sinus Medii (Image Credit: NASA LRO)<br /></td></tr></tbody></table><div><div><div><u><b>Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-05-29</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 23:31</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>I observed Sinus Medii to the southwest of Mare Vaporum. I noticed immediately what appeared to be lines of mountains in a 'pincer' type pattern with a moderately sized crater (Pallas) at the apex with central peaks. The pincer mountain formation was located in the northwest edge of Sinus Medii. On the northern most pincer there was a small crater (Chladni) at the end of the mountain chain. A slightly larger crater (Triesnecker) was seen just to the east of Chladni. When the seeing was steady I was able to make out a couple smal craters (Bruce and Blagg) in the southern regions of the bay.</div></div><div><br /></div><div><div><u><b>Location</b></u></div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object SM, highlighted below.</div></div></div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgzEsVz7T1q700vZXN8FMWfgcIpGh3WfLk51QY1xesrJ_9sJf79GVZXKnCCM3rUzT2zPU7numyxVvMcIAPvdioAPAH9lyge4IuSvnrFDQ62ZiGjcP5vBmaNlqeDQgpVr9_QPXupJ-wUM5g/s1490/SinusMediiMap.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgzEsVz7T1q700vZXN8FMWfgcIpGh3WfLk51QY1xesrJ_9sJf79GVZXKnCCM3rUzT2zPU7numyxVvMcIAPvdioAPAH9lyge4IuSvnrFDQ62ZiGjcP5vBmaNlqeDQgpVr9_QPXupJ-wUM5g/w640-h630/SinusMediiMap.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Sinus Medii (Bay)<br /></td></tr></tbody></table><div><br /></div><div>Another great view is from the Apollo 16 mission. This view below has the southeastern edge in the foreground while viewing across to the northwestern edge. On the front edge the crater Rhaeticus is visible with a strong ring of mountains around it. Further to the back on the right side is the 27km diameter Triesnecker.</div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhUwTwtpS6k4X8EVTKrjLS0XzGAIcpgkdssxoB35G_dyijaXuM-HJBXQM13V6z3mW8IChodoV1UXX7cf-DIOZK4MDYeobzwruuwLQdflTaEz7DC8nmdBfdvmI1Mu4WW7seUY-77O25pI0U/s2860/Sinus_Medii_AS16-M-0842.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1200" data-original-width="2860" height="168" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhUwTwtpS6k4X8EVTKrjLS0XzGAIcpgkdssxoB35G_dyijaXuM-HJBXQM13V6z3mW8IChodoV1UXX7cf-DIOZK4MDYeobzwruuwLQdflTaEz7DC8nmdBfdvmI1Mu4WW7seUY-77O25pI0U/w400-h168/Sinus_Medii_AS16-M-0842.jpg" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Sinus Medii (Image Credit: NASA Apollo 16)<br /></td></tr></tbody></table>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-86663113621034258162020-06-24T12:12:00.000-06:002020-06-24T12:12:14.723-06:00Explore the Moon - Mare Vaporum<u><b>Background</b></u><br /><br />Mare Vaporum (Sea of Vapor) can be found southeast of the Apennine Mountains of which the other side is Mare Imbrium. The northeast border is several lunar lakes and Montes Haemus which lies between Mare Vaporum and the much larger Mare Serenitatis (Sea of Serenity). Directly to the west is Sinus Aestuum (Seething Bay) of which Eratosthenes encroaches upon the northern shores. Mare Vaporum is a relatively circular sea with a diameter of approximately 230km which approaches the size of some large craters on the nearside.<div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUCXqfsMiEstOl8AJjNthT_iDmPdoZbPiGZA5PNwNDEeYZ6kzaZ5ZM-sSW2SvRuXJItu-_oMLGoXnLf8g_eJ1u3ymz-XNfq25ytja-nK0OzSu1Um4lFYaK9FpWPmgkysf5qBMc7y85ysM/s4048/Mare_Vaporum_AS17-M-1674.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="4048" data-original-width="4048" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjUCXqfsMiEstOl8AJjNthT_iDmPdoZbPiGZA5PNwNDEeYZ6kzaZ5ZM-sSW2SvRuXJItu-_oMLGoXnLf8g_eJ1u3ymz-XNfq25ytja-nK0OzSu1Um4lFYaK9FpWPmgkysf5qBMc7y85ysM/w400-h400/Mare_Vaporum_AS17-M-1674.jpg" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mare Vaporum (Image Credit: NASA Apollo 17)<br /></td></tr></tbody></table><div><br /><div><div><u><b>Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-06-01</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 23:54</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>I observed Mare Vaporum south of the Apennines which seemed to form a thick border. A thinner border with Mare Serenitatis was also noticed. Compared to the Apennines these seemed more like smaller hills. There was a moderate sized crater (Manlius) between Mare Vaporum and Mare Serenitatis. There were rilles and hills throughout the middle of the sea along with darker patches of lunar floor. The south edge of the sea had a noticible gouge (Rima Hyginus) with a crater (Hyginus) in the middle.</div></div><div><br /></div><div><div><u><b>Location</b></u></div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object MV, highlighted below.<br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMAAqjD81hPHW9O4hhOeIqAFYjxelunX87mBJYlKqjtqYzvj2HuDnGRq0IC454jLtHef6X6mknCAz33MQv-3FFA012zHb1uB7QJAb3AeVATA0Ijpg3gY4ZlawalgKSRVEkgSq3zSMGd3o/s1490/MapMareVaporum.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMAAqjD81hPHW9O4hhOeIqAFYjxelunX87mBJYlKqjtqYzvj2HuDnGRq0IC454jLtHef6X6mknCAz33MQv-3FFA012zHb1uB7QJAb3AeVATA0Ijpg3gY4ZlawalgKSRVEkgSq3zSMGd3o/w640-h630/MapMareVaporum.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mare Vaporum (Sea)<br /></td></tr></tbody></table></div><div><br /></div></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-86149576929871810822020-06-22T12:21:00.000-06:002020-06-22T12:21:47.338-06:00Explore the Moon - Apennine Mountains<u><b>Background</b></u><br /><br />The Apennine Mountains (Montes Apenninus) can be found on the southerneastern edge of Mare Imbrium (Sea of Rains). The 100km wide mountain range extends nearly 1,000km from the crater Eratosthenes running in an arc northeast to a gap between Mare Imbrium and Mare Serenitatis (Sea of Serenity). The tallest (base to peak) mountain on the Moon, Mons Huygens, is contained within this range and reaches 5,400m into the sky. The Apennine Mountains formed from the impact event that created Mare Imbrium nearly 4 billion years ago. It is interesting to note that Apollo 15 landed at the base of Mons Hadley Delta in the northeastern region of this range.<div><br /><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYNdR5muQdEvFHfnr1dlkz0fB1LbCinUA1r-JSrXqMDFSXBSlEY8WftcyNNFgv3vuWYvdk9pVf2kFXY-W-xc59ekGLe56t8-ZWwJgvTyWYgN9MRO0gbFHKSGgXQG9PB5dWZTTlgzIH6bY/s3176/Montes_Apenninus_%2528LRO%2529.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="2532" data-original-width="3176" height="510" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYNdR5muQdEvFHfnr1dlkz0fB1LbCinUA1r-JSrXqMDFSXBSlEY8WftcyNNFgv3vuWYvdk9pVf2kFXY-W-xc59ekGLe56t8-ZWwJgvTyWYgN9MRO0gbFHKSGgXQG9PB5dWZTTlgzIH6bY/w640-h510/Montes_Apenninus_%2528LRO%2529.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Apennine Mountains (Image Credit: NASA LRO)<br /></td></tr></tbody></table><div><br /></div><div><div><u><b>Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-05-29</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 23:17</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>The Appenine Mountains were found south of the craters Autolycus and Archimedes. There seemed to be a noticeable foothills region on the northern edge of the main range. I saw two craters south of the range and later determined them to be Conon and Aratus. As I looked southwest from Mare Serenitatis the range seemed to get thicker before again thinning out as it approached Eratosthenes.</div></div></div><div><br /></div><div><div><u><b>Location</b></u></div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object F, highlighted below.</div></div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXRVxYNDrxUXzLL0ey8VD1vUVBwTIKEAoLUZJ2TtuhksFI4CTYt4XzqxTgq9-JNUwaVdI111uER7KvR0IbWUdMRIqrPIrGX46f4aNwBXYi8Ah0w24RwahL8imf-yL7p1WZJTjXUENR9eY/s1490/ApennineMap.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjXRVxYNDrxUXzLL0ey8VD1vUVBwTIKEAoLUZJ2TtuhksFI4CTYt4XzqxTgq9-JNUwaVdI111uER7KvR0IbWUdMRIqrPIrGX46f4aNwBXYi8Ah0w24RwahL8imf-yL7p1WZJTjXUENR9eY/w640-h630/ApennineMap.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Apennine Mountains (Mountain Range)<br /></td></tr></tbody></table><div><br /></div><div>Another great view is from the Apollo 15 mission. This images has the moderately sized crater Conon on the far right with the bulk of the Apennines below. The river-like feature is Rima Hadley which stretches for 80km at 2.5km wide and passes by the crater Hadley C. The Apollo 15 mission landed just above the top (northeastern) bend of Rima Hadley.</div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjSEFu-YXNHBNpXeC0hu58G20ubEfmE_VNN8-w96iHIMsbh2fH8z9rc8rlMEsvZxIrEq0e1l_euYZy3zC-YKbEbJxW_idkmWiych3h__PAVnxnD2BwajOQ46EyXnkQB2pRL237W1W0qjyM/s2391/Montes_Apenninus_AS15-M-1423.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1245" data-original-width="2391" height="334" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjSEFu-YXNHBNpXeC0hu58G20ubEfmE_VNN8-w96iHIMsbh2fH8z9rc8rlMEsvZxIrEq0e1l_euYZy3zC-YKbEbJxW_idkmWiych3h__PAVnxnD2BwajOQ46EyXnkQB2pRL237W1W0qjyM/w640-h334/Montes_Apenninus_AS15-M-1423.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Apennine Mountains (Image Credit: Apollo 15)<br /></td></tr></tbody></table><div><br /></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-68029192535711672992020-06-21T12:51:00.003-06:002020-06-21T13:28:37.651-06:00Explore the Moon - Mare Frigoris<u><b>Background</b></u><br /><br />Mare Frigoris (Sea of Cold) can be found stretching nearly 1,500km across the northern section of the Moon. It runs east from Mare Serenitatis (Sea of Serenity) all the way west to Sinus Roris (Bay of Dew) just off of Oceanus Procellarum (Ocean of Storms).<div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6Z7O1QYJjdSc2Rs9z9-QfLTDRxurEIiC96S6GFkiSorDlngMVL7-Cn_KLLAt_xx8PWzSrCDyTB8Q6KWxRObI03zyvPXixg8MOnLlXMUj-Iwqa64ffMeOsTNaDvua8YX-Ezn_0OJEFqW4/s699/MareFrigoris+-+Copy.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="285" data-original-width="699" height="260" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6Z7O1QYJjdSc2Rs9z9-QfLTDRxurEIiC96S6GFkiSorDlngMVL7-Cn_KLLAt_xx8PWzSrCDyTB8Q6KWxRObI03zyvPXixg8MOnLlXMUj-Iwqa64ffMeOsTNaDvua8YX-Ezn_0OJEFqW4/w640-h260/MareFrigoris+-+Copy.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mare Frigoris (Image Credit: NASA LRO)<br /></td></tr></tbody></table><div><br /></div><div><div><u><b>Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-06-01</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 23:54</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>I observed this mare when the terminator was intersecting with the larger portion of Oceanus Procellarum. In the west it seemed to stretch all the way to just north of Sinus Iridum (Bay of Rainbows) and ended near a crater named Harpalus. In the east, I followed it to the northern reaches of Mare Serenitatis just past Aristoteles and Eudoxus. It seemed to empty into Lacus Mortis (Lake of Death). The Alps Mountains offer a strong border between it and Mare Imbrium (Sea of Rains) on the east side of Plato. However, on the west side of Plato the border does not seem to contain as much altitude. This mare is so long it would be good to observe this over eight days starting from a couple days before first quarter.</div></div><div><br /></div><div><div><u><b>Location</b></u></div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object MFr, highlighted below.</div></div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgN1Tvj3sXOr7f9i0GW7cZkTYcc4fapmTGBmjCoiRiiGFlmJZjZJtej60SqNkPwMmHTbcKt9nFXorMAO9yOr46NV4IygfuToPfbRrGLqo6jl9Hm78Dk0Kr0WF4mNIwT_DL90Y-hle6ZOk0/s1490/MareFrigorisMap.png" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgN1Tvj3sXOr7f9i0GW7cZkTYcc4fapmTGBmjCoiRiiGFlmJZjZJtej60SqNkPwMmHTbcKt9nFXorMAO9yOr46NV4IygfuToPfbRrGLqo6jl9Hm78Dk0Kr0WF4mNIwT_DL90Y-hle6ZOk0/w640-h630/MareFrigorisMap.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mare Frigoris (Sea)<br /></td></tr></tbody></table><div><br /></div><div>Another great image comes from Lunar Orbiter 4 from 1967. This shows the mare stretching from Harpalus in the west, north over Plato, past Aristoteles, to end just north of Lacus Mortis.</div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiZtvkNRXvPXqHU3_ibvRib8zDzkZOmSLhZ2wvp5ThDktvGgIeUUKn9biaj5nTC2ayp5xTNvCJBxGppA85k9Hwjgcm9qqXt5m1HGBBLcLLoA0YmASuqXZVAKFkS_mTqPi5L6an1xTCTwls/s2384/MareFrigorisL4.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1568" data-original-width="2384" height="421" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiZtvkNRXvPXqHU3_ibvRib8zDzkZOmSLhZ2wvp5ThDktvGgIeUUKn9biaj5nTC2ayp5xTNvCJBxGppA85k9Hwjgcm9qqXt5m1HGBBLcLLoA0YmASuqXZVAKFkS_mTqPi5L6an1xTCTwls/w640-h421/MareFrigorisL4.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Mare Frigoris (Image Credit: NASA Lunar Orbiter 4)<br /></td></tr></tbody></table><div><br /></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-40936843449697966732020-06-19T14:18:00.001-06:002020-06-19T14:18:43.001-06:00Explore the Moon - Halley<u><b>Background</b></u><br /><br />The crater Halley can be found directly south of Hipparchus near the center of the nearside of the Moon. The crater is named after the English astronomer, Edmond Halley. Halley is probably most famous for calculated the periodicity of his eponymous comet. Halley was a contemporary of Isaac Newton and they worked together on the physics of gravity. Halley even funded the publication of Newton's Magnus Opus, <i>Philsophiae Naturalis Principia Mathematica</i>. He voyaged to the Southern Hemisphere to map the stars as Flamsteed had mapped the Northern Hemisphere.<div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtiCRHG8p8xlWy2RzX8iW52phmvqa-c_pLzIV7wsb3unImfXoAgijh0WhqFuNIsiUSJ85pFsqQheN6NXQ_kzDxD1rUstHNpLlgBHd9iJwVLZeRTSoA5-HROkTYPSc-nv2FhtuF3eaSGyc/s1200/Halley_crater_AS16.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1200" data-original-width="1200" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjtiCRHG8p8xlWy2RzX8iW52phmvqa-c_pLzIV7wsb3unImfXoAgijh0WhqFuNIsiUSJ85pFsqQheN6NXQ_kzDxD1rUstHNpLlgBHd9iJwVLZeRTSoA5-HROkTYPSc-nv2FhtuF3eaSGyc/s320/Halley_crater_AS16.jpg" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Halley (Image Credit: NASA Apollo 16)<br /></td></tr></tbody></table><div><div><div><br /></div><div>Halley is a moderately sized crater with a diameter of 36km and a depth of 2,510m. </div><div><br /></div><div><u><b>Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-05-29</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 23:40</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>Halley is the largest of four successively smaller craters to the south of Hipparchus. The edge of Halley actually intersects with the walled rim of Hipparchus. I noticed a small peak within Halley that was difficult to see.</div></div><div><br /><div><u><b>Location</b></u></div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object #51, highlighted below.</div></div></div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-f1Qb-qV3_8gbJJsrGW24jD6u0jAtJdNGPfS3Cd_bRWkiC0kocRgL7fdZte4TzzH15VHu4kTlk9dN17h5T3ZWxIMElhMXbcMa30-OY-vz50nW8bA-e-3mvRHm6Gdl4elpGqUlw-YWrwA/s1490/HalleyMap.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-f1Qb-qV3_8gbJJsrGW24jD6u0jAtJdNGPfS3Cd_bRWkiC0kocRgL7fdZte4TzzH15VHu4kTlk9dN17h5T3ZWxIMElhMXbcMa30-OY-vz50nW8bA-e-3mvRHm6Gdl4elpGqUlw-YWrwA/w640-h630/HalleyMap.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Halley (Crater)<br /></td></tr></tbody></table><div><br /></div><div>Another great view is from the Apollo 16 mission. This image shows Halley right below Hipparchus, neighboured to the east by the crater known as Hind. The smaller crater further to the east is Hipparchus C. In the bottom left hand corner is the flooded northeast region of Albategnius. The sizes of Halley, Hind and Hipparchus C are respectively 36km, 30km, 17km.</div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYOVFoJhcaDsz4MM5HePINLjOzSQ7az53R9DlEA_X_-wVqbh22m8ovMwQgU0SvfP0jbfcTlz7wBDhIqPMqF3vJgAGXJyBw-60peRJ10Z14wu9efrq7eixWnPAGtxjqJZSe4wErQvrYztg/s643/HalleyA16.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="643" data-original-width="626" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYOVFoJhcaDsz4MM5HePINLjOzSQ7az53R9DlEA_X_-wVqbh22m8ovMwQgU0SvfP0jbfcTlz7wBDhIqPMqF3vJgAGXJyBw-60peRJ10Z14wu9efrq7eixWnPAGtxjqJZSe4wErQvrYztg/w390-h400/HalleyA16.jpg" width="390" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Halley (Image Credit: NASA Apollo 16)</td></tr></tbody></table>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-13680396521105904892020-06-18T14:43:00.000-06:002020-06-18T14:43:12.166-06:00Explore the Moon - Alps Mountains<u><b>Background</b></u><br /><br />The Alps Mountains (Montes Alpes) can be found on the northern edge of Mare Imbrium (Sea of Rains). It is a mountain range that is approximately 50km wide and stretches for more than 250km. The tallest peaks of the Alps reach nearly 2.5km and cast long shadows on the lunar surface. <div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjyseILK4yhJVvZqGT39hEkSJVeAbjdFiKewLMvhKNtGNV7yDqrTd2UqseVrMNvan_IAB2uEH6HJjPzz3270cbA29OfDRylEi6GQNMrCvcw6TIZaOo_EJi2agjUnL59qf1EUr8QTsvhwU/s1038/Montes_Alpes.png" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="821" data-original-width="1038" height="316" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhjyseILK4yhJVvZqGT39hEkSJVeAbjdFiKewLMvhKNtGNV7yDqrTd2UqseVrMNvan_IAB2uEH6HJjPzz3270cbA29OfDRylEi6GQNMrCvcw6TIZaOo_EJi2agjUnL59qf1EUr8QTsvhwU/w400-h316/Montes_Alpes.png" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Alps Mountains (Image Credit: NASA LRO)</td></tr></tbody></table><div><br /><div><u><b>Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-05-29</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 22:23</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>The Alps (Montes Alpes) seem to get narrower in the southeastern region after the Alpine Valley bisects it. This region seemed to have tall mountains as I counted 9 very spiky shadows of peaks. The range stretched all the way from Plato in the north to Cassini further to the southeast. There is a slight gap between the Alps and the Caucasus. I did not notice very many small craters throughout the range except on the western lowlands as it transitioned to Mare Imbrium.<br /><br /><div><u><b>Location</b></u></div></div></div><div><div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object B, highlighted below.</div></div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgf6UqHunaSkNdhJirbMu4dTm_z6XcxgIKDcn7n2Xnsewwxm0nxuz7Fd7mMco7xE1mj9ppNxbjUJrBzdLrCGqMdq9EI-AeBtHzGo71V0AVAhnJ94lawygIFgG_6yuu6KQolgIU4doAPLv0/s1490/AlpsMap.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgf6UqHunaSkNdhJirbMu4dTm_z6XcxgIKDcn7n2Xnsewwxm0nxuz7Fd7mMco7xE1mj9ppNxbjUJrBzdLrCGqMdq9EI-AeBtHzGo71V0AVAhnJ94lawygIFgG_6yuu6KQolgIU4doAPLv0/w640-h630/AlpsMap.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Alps Mountains (Mountain Range)<br /></td></tr></tbody></table><div><br /></div></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-62031853079326269362020-06-17T11:29:00.001-06:002020-06-17T11:29:46.655-06:00Explore the Moon - Albategnius<u><b>Background</b></u><br /><br />The crater Albategnius can be found on directly south of Hipparchus just east of the lunar prime meridian. It is named after the Arab astronomer, Al-Battani. Born during the 9th century CE in what is now modern day Turkey, he spent most of his life in Raqqa, Syria. He improved on Ptolemy's calculations from more than half a millennium ago and determined the length of the year to within 2 minutes of the currently accepted value. Many famous astronomers, including Copernicus, referred to his work throughout the Renaissance. Astronomy throughout the Arab world had a golden age throughout medieval times and contributed significantly to our understanding today.<div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJfEe_Q7DcF-qkX5klmgtNw9uC9xGTrZTtlPF1SImdlC3UB4KjMwz7Sp8PFBlTzyOBozfsBrBJ0ugN1Pqcn5GJH-W3SytUzRpNctcKPEw68jtAUZ37yZ_C2nQF0ewXyYvbeZ5MjTy5qy0/s1304/Albategnius_crater.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1300" data-original-width="1304" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgJfEe_Q7DcF-qkX5klmgtNw9uC9xGTrZTtlPF1SImdlC3UB4KjMwz7Sp8PFBlTzyOBozfsBrBJ0ugN1Pqcn5GJH-W3SytUzRpNctcKPEw68jtAUZ37yZ_C2nQF0ewXyYvbeZ5MjTy5qy0/s320/Albategnius_crater.jpg" width="320" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Albategnius (Image Credit: NASA Lunar Orbiter 4)<br /></td></tr></tbody></table><div><div><div><br /></div><div>Albategnius is a large crater with a diameter of 136km and a depth of 4,400m. </div><div><br /></div><div><u><b>Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-05-29</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 23:46</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>Albategnius seemed to have a strong ridge on the eastern edge that may have been higher than the other side. There were craters noticeable within with a larger crater that breaks the rim on the southwestern edge. This crater (Klein) had a central peak. Albategnius itself had a central peak formation that was clearly visible. The presence of interior craters and a flooded floor indicated to me it was fairly old.</div></div><div><br /><div><u><b>Location</b></u></div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object #21, highlighted below.</div></div></div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxx5UL6SuWBwtHmG1nsLWndZb-xcqhgPH1oGwfxYOCHnrJOE_pSH2BkZhnB6I6Ks4JQIDEeC-E0OgL92AUeC3YPVfIEwpQJXsibt22BV_XFza_S5bCPCIlPnYGZnoYKq3VTqmhOzQyR34/s1490/AlbategniusLocation.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgxx5UL6SuWBwtHmG1nsLWndZb-xcqhgPH1oGwfxYOCHnrJOE_pSH2BkZhnB6I6Ks4JQIDEeC-E0OgL92AUeC3YPVfIEwpQJXsibt22BV_XFza_S5bCPCIlPnYGZnoYKq3VTqmhOzQyR34/w640-h630/AlbategniusLocation.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Albategnius (Crater)<br /></td></tr></tbody></table><div><br /></div><div>Another great view is from the Apollo 16 mission. This is looking southward with the interior craters Albategnius B and C at the bottom and the larger Klein just off to the right of the central peak formation. The formation know as Alpha Albategnius is nearly 20km long and attains a maximum height of 1,500m.<br /><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEijMRPRpcXLU2Akx1x4qi7EwSs8y4jfZk5soCLYLhXQt94xm2uBT_qmd9MmH3onIr-QlmCzALw0IICJhZ5PRNG2lwQxy4nAdgnuzx5Yry02iNxtpAwbgia8AnFz0X6uNjG2Lz_z3qJvzic/s2020/Albategnius_crater_AS16.jpg" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1580" data-original-width="2020" height="313" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEijMRPRpcXLU2Akx1x4qi7EwSs8y4jfZk5soCLYLhXQt94xm2uBT_qmd9MmH3onIr-QlmCzALw0IICJhZ5PRNG2lwQxy4nAdgnuzx5Yry02iNxtpAwbgia8AnFz0X6uNjG2Lz_z3qJvzic/w400-h313/Albategnius_crater_AS16.jpg" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Albategnius (Image Credit: NASA Apollo 16)<br /></td></tr></tbody></table>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-86831800857244694712020-06-16T12:54:00.002-06:002020-06-16T19:00:18.411-06:00Explore the Moon - Hipparchus<u><b>Background</b></u><br /><br />The crater Hipparchus can be found near the center of the Moon on the nearside. To its immediate south is the large crater Albategnius and to the southwest is Ptolaemeus. The nearest basin is Sinus Medii (Central Bay) to the northwest which forms the origin of the Moon's coordinate system. The crater is named after the famous Greek astronomer, Hipparchus. Hipparchus was arguably one of the most important astronomers in antiquity and worked throughout the 1st Century BCE. He invented trigonometry, calculated the Earth's precession, invented the astrolabe and compiled one of the first comprehensive star catalogs. Armed with his knowledge, he may have been one of the first astronomers to calculate the recurrence of eclipses.<div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhsLLkRFqiu1UXpsp4s8xANloO7XMhMgRx5q_7-Y1gAmteXO5pcNLvJNxQDG02iuWDRZAy5qREhB5dMhXFhkmDUxp60QfEthrpbQGB6j84nI3ncWsyrTgN88lJqZbeKmSxMXJS4309f9JU/s2114/Hipparchus_%2528LRO%2529+%25282%2529.png" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="2114" data-original-width="2114" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhsLLkRFqiu1UXpsp4s8xANloO7XMhMgRx5q_7-Y1gAmteXO5pcNLvJNxQDG02iuWDRZAy5qREhB5dMhXFhkmDUxp60QfEthrpbQGB6j84nI3ncWsyrTgN88lJqZbeKmSxMXJS4309f9JU/s320/Hipparchus_%2528LRO%2529+%25282%2529.png" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Hipparchus (Image Credit: NASA LRO)<br /></td></tr></tbody></table><div><br /></div><div><div>Hipparchus is a large crater with a diameter of 151km and a depth of 3,300m. </div><div><br /></div><div><u><b>Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-05-29</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 23:33</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>The first thing I noticed about Hipparchus was that it was missing a semicircular section of its southwestern rim. Also, just outside of its southeastern rim was four successively smaller craters running from west to east. Hipparchus is noticeably flooded with a very low rim that is partially eroded. The crater contains several other craters within. I would speculate Hipparchus is very old. The ill-formed Hipparchus X was seen just northeast of the missing semicircular rim and was noticeably eroded. Horrocks in the northeast was prominent and found within the walls of Hipparchus.</div></div><div><div><br /><div><u><b>Location</b></u></div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object #55, highlighted below.<br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8iZrlX-x_JyNkdc6nDTZfxb8-pbSerzPiqb6NAQ-EmUFn_FXHJiLuYfIR_hyphenhyphenO9N4KSG6OWlKL_kqH4BlUeWf8T-Ryb8BQ8waAY_cOJfFssYssnHhTPTw-L98H5pCvp87XYc7yncpix70/s1490/HipparchusMap.png" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi8iZrlX-x_JyNkdc6nDTZfxb8-pbSerzPiqb6NAQ-EmUFn_FXHJiLuYfIR_hyphenhyphenO9N4KSG6OWlKL_kqH4BlUeWf8T-Ryb8BQ8waAY_cOJfFssYssnHhTPTw-L98H5pCvp87XYc7yncpix70/w640-h630/HipparchusMap.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Hipparchus (Crater)<br /></td></tr></tbody></table><br />Another great view is from the Apollo 16 mission. This is looking northward from Halley (in the foreground) with Sinus Medii in the background at the top left.</div></div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBf79qnAaj0_m5NDkY4gT0s-e_lTKL3wX-wBytV_SEwzzjYGaNXvTnYjX7cEnkmgWcCkREIg-tQFURG69HeIEsvbzoi8I8qfdhrYd5GYD0lqtGsiJQlaQqJNypRvrqSjvpb4TWPBlDxwY/s1012/HipparchusCrater.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="943" data-original-width="1012" height="373" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjBf79qnAaj0_m5NDkY4gT0s-e_lTKL3wX-wBytV_SEwzzjYGaNXvTnYjX7cEnkmgWcCkREIg-tQFURG69HeIEsvbzoi8I8qfdhrYd5GYD0lqtGsiJQlaQqJNypRvrqSjvpb4TWPBlDxwY/w400-h373/HipparchusCrater.jpg" width="400" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Hipparchus (Image Credit: NASA Apollo 16)<br /></td></tr></tbody></table><div><br /></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-51503686615351455592020-06-15T11:36:00.001-06:002020-06-16T01:24:51.537-06:00Explore the Moon - Autolycus<u><b>Background</b></u><br /><br />The crater Autolycus can be found on the eastern edge of Mare Imbrium (Sea of Rains) just south of the larger crater Aristillus. It is named after the Greek astronomer Autolycus of Pitane who published books on mathematics and geometry. His book, <i>On the Moving Sphere</i> may be the earliest completely preserved mathematical book from Greek history. In his other great work, <i>On Risings and Settings</i>, he remarks "any star which rises and sets always rises and sets at the same point in the horizon". As a contempoary of Aristotle, Autolycus was a supporter of homocentric spheres, a mathematical model to upload the geocentric conception of the solar system.<div><br /></div><div><div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwlS06qOOURlVf80-DClEI3ZjbLXm7ImUf3MHVo34vDT1hJaKy3uDhdJb27fucqZwyIotlSC6iGtg2e47kGqBD4MAMs0WEF4IuO9uJaVLjmbpInBh-MyWMh36myL85nSDIk0H-uu_n-2Q/s644/Autolycus_crater_4110_h1.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="644" data-original-width="644" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhwlS06qOOURlVf80-DClEI3ZjbLXm7ImUf3MHVo34vDT1hJaKy3uDhdJb27fucqZwyIotlSC6iGtg2e47kGqBD4MAMs0WEF4IuO9uJaVLjmbpInBh-MyWMh36myL85nSDIk0H-uu_n-2Q/s320/Autolycus_crater_4110_h1.jpg" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Autolycus (Image Credit: NASA Lunar Orbiter 4)</td></tr></tbody></table><b><br /></b>Autolycus is a moderate sized crater with a diameter of 40km and a depth of 3,440m. The floor is not flooded and the walls show little sign of erosion. This would make the crater relatively young.<u><b><br /><br />Observation</b></u><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-05-29</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 23:11</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div></div><br /><u>Comments</u><div><br /></div><div>I noted that this crater was found in the eastern region of Mare Imbrium between Aristillus and the Apennine Mountains (Montes Apennines). To its immediate west was the large crater Archimedes. There were small mountains just south of Autolycus that lead to the larger Apennines. There was a ridge on the westernmost interior of the crater that indicates a strong terracing slope back to the lunar surface. Luna 2 landed just to the west of Autolycus just north of some hilly terrain.<br /><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgd5NMkjrXp3r3tfJxEWZ0MhaLa72TTP6Cs2Ai4HptrE_Q7UDGsqe_UWX0zQTRYR3sVwR3pYl4y-ZUjGZtxqQh8sMNC8ZRXJqUx38PmnFwa59zM4lVSgnfSc1RWqjsIy3s3EpXuTRgJPw/s2483/AutolycusSketch.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="2483" data-original-width="1608" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgd5NMkjrXp3r3tfJxEWZ0MhaLa72TTP6Cs2Ai4HptrE_Q7UDGsqe_UWX0zQTRYR3sVwR3pYl4y-ZUjGZtxqQh8sMNC8ZRXJqUx38PmnFwa59zM4lVSgnfSc1RWqjsIy3s3EpXuTRgJPw/s320/AutolycusSketch.jpg" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Autolycus Sketch<br /></td></tr></tbody></table><div><br /></div><div><u><b>Location</b></u></div><div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object #31, highlighted below.</div></div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7WnDQOKdjL3rYlydDORNw5COu1HdHmcJCI3ILUrklQAWA9qlwxYFpL7fCUZJNF-uxYEj3zaQL-0f-YiM5qFjyu_3UpF317O2aGf7rYXSm2KP3DhhHBhkTWqhao63drNa0mYirYTRGXIw/s1490/MoonAutolycus.png" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg7WnDQOKdjL3rYlydDORNw5COu1HdHmcJCI3ILUrklQAWA9qlwxYFpL7fCUZJNF-uxYEj3zaQL-0f-YiM5qFjyu_3UpF317O2aGf7rYXSm2KP3DhhHBhkTWqhao63drNa0mYirYTRGXIw/w640-h630/MoonAutolycus.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Autolycus (Crater)<br /></td></tr></tbody></table><div><br /></div><div>Another great view is from the Apollo 15 mission. This is looking northward from Autolycus to Aristillus. In the upper right you can see the low formation of Cassini. The Mountain in the top left centre is Mons Piton and the Alps Mountains are further back.<br /><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNP8yVZwHrywTvS7WLklY8G1kZDyjZtnjjxZdqZH7FYMIrI-_YE7yhGGoZwR-0dF5o7wIK_VKvJqo-BiSFJMgW8mk_oNioK_tH-Yrjj5XhcPjRqtAKqh7S8NAuQoyMAF21IGwseGPASeA/s1280/Autolycus_crater_Aristillus_crater_AS15-M-1538.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1240" data-original-width="1280" height="496" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiNP8yVZwHrywTvS7WLklY8G1kZDyjZtnjjxZdqZH7FYMIrI-_YE7yhGGoZwR-0dF5o7wIK_VKvJqo-BiSFJMgW8mk_oNioK_tH-Yrjj5XhcPjRqtAKqh7S8NAuQoyMAF21IGwseGPASeA/w512-h496/Autolycus_crater_Aristillus_crater_AS15-M-1538.jpg" width="512" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Autolycus (Image Credit: NASA Apollo 15)<br /></td></tr></tbody></table><br />Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0tag:blogger.com,1999:blog-8937094893607344014.post-26463030972580870642020-06-14T13:26:00.003-06:002020-06-16T01:21:00.282-06:00Explore the Moon - Caucasus Mountains<u><b>Background</b></u><br /><br />The Caucasus Mountains (Montes Caucasus) can be found on the eastern edge of Mare Imbrium (Sea of Rains). It is a mountain range that is approximately 100km wide and stretches for more than 520km. The tallest peaks of the Caucasus reach up to 3650m and cast long shadows on the lunar surface. The mountain range is just east of Cassini, Aristillus and Autolycus and they stretch all the way to the large craters, Eudoxus and Aristoteles in Mare Frigoris (Sea of Cold).<div><br /></div><div><div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYArJ9JAs4UzKWH9YUofcRQBvOiritza3soJMKhztHfZFaA2tfL9ZAQcM_8IIBhv-fOctNkyvII6aAk6_4K7XNm6e5jIi8blgcoqZYGhNZWxyKLYi0OGPNjvFmVxiFGNDeKQAzPgZnNlc/s1988/Montes_Caucasus_%2528LRO%2529.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1988" data-original-width="1988" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiYArJ9JAs4UzKWH9YUofcRQBvOiritza3soJMKhztHfZFaA2tfL9ZAQcM_8IIBhv-fOctNkyvII6aAk6_4K7XNm6e5jIi8blgcoqZYGhNZWxyKLYi0OGPNjvFmVxiFGNDeKQAzPgZnNlc/s320/Montes_Caucasus_%2528LRO%2529.png" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Caucasus Mountains (Image Credit: NASA LRO)</td></tr></tbody></table><b style="text-decoration-line: underline;"><br />Observation</b><br /><br />My abbreviated observation record can be found below:<br /><div><br /></div><div><table border="1" bordercolor="#888" cellspacing="0" style="border-collapse: collapse; border-color: rgb(136, 136, 136); border-width: 1px;"><tbody><tr><td style="min-width: 60px;"> Date</td><td style="min-width: 60px;"> 2020-05-29</td></tr><tr><td style="min-width: 60px;"> Time </td><td style="min-width: 60px;"> 22:57</td></tr><tr><td> Sky </td><td> Clear</td></tr><tr><td> Telescope</td><td> 8" Reflector (1200mm F.L.)</td></tr><tr><td> Eyepiece</td><td> 10mm (2x Barlow)</td></tr><tr><td> Magnification</td><td> 240x</td></tr></tbody></table></div></div><br /><u>Comments</u><div><br /></div><div>The south end of the Caucasus Mountains seems to have a lone mountain, followed by the much larger range to the north. An odd shaped crater (almost resembling a square) was seen on the eastern edge of the mountain range. Another crater of similar size was seen over the mountains just southeast of Cassini. The Alps and Apennine Mountain ranges seemed to both point to the Caucasus. The Caucasus stretched all the way north to the large craters Eudoxus and Aristoteles.</div></div><div class="separator" style="clear: both; text-align: center;"><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjK7gueldHTrflmCSTc5roggcxLBbjz1L6hKHtvRqULGyeYWYH_NSw49z2624BYeEEhWEuUX2A8rxVYJNVNooeALA8sm05D_igKPjHmwxDB6TQ3Uu74JX3LG1jDgth8CLTDLvrZ7wLXLIw/s3712/Caucasus.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="3712" data-original-width="1770" height="400" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjK7gueldHTrflmCSTc5roggcxLBbjz1L6hKHtvRqULGyeYWYH_NSw49z2624BYeEEhWEuUX2A8rxVYJNVNooeALA8sm05D_igKPjHmwxDB6TQ3Uu74JX3LG1jDgth8CLTDLvrZ7wLXLIw/w191-h400/Caucasus.jpg" width="191" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Caucasus Mountains<br /></td></tr></tbody></table><div class="separator" style="clear: both; text-align: center;"><br /></div><div><div><u><b>Location</b></u></div><div><br />To help you locate this object a map has been provided from the Royal Astronomical Society of Canada's <a href="https://www.rasc.ca/handbook">Observer's Handbook</a>. It is object H, highlighted below.<br /><br /></div></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgrKkDHm5BDa130coylMRN0vSWE4pwRYXIdlHy61gXqs6OpOkQ8bGp19EEjX0IEtNIQU-y9FGZAzxBXBLlEPxypYGajSOeGfYtFKyfeKwy6MGpOilmwYgVH6ur8YVy903Zs1huD8UJyQuM/s1490/MoonCaucasus.png" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="1465" data-original-width="1490" height="630" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgrKkDHm5BDa130coylMRN0vSWE4pwRYXIdlHy61gXqs6OpOkQ8bGp19EEjX0IEtNIQU-y9FGZAzxBXBLlEPxypYGajSOeGfYtFKyfeKwy6MGpOilmwYgVH6ur8YVy903Zs1huD8UJyQuM/w640-h630/MoonCaucasus.png" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Caucasus Mountains (Mountain Range)<br /></td></tr></tbody></table><div><br /></div><div>Another great view is from the Apollo 15 mission. This is looking northward from the southernmost point of the Caucasus Mountains.</div><div><br /></div><table align="center" cellpadding="0" cellspacing="0" class="tr-caption-container" style="margin-left: auto; margin-right: auto;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiyEyCuvlZIYA-jgu_VK-DCbBxocYRxwqUjyaKsTHejg2iaYc-5vKAXX8PDRbNoS0fr84JG2GfAxQP79swvhCre1Y2sfD4M_cpviFHalHLouFvfkjKVyN8J4HZiDMSmusNHbmU40o6aN6E/s1024/Montes_Caucasus_AS15-M-1536.jpg" style="margin-left: auto; margin-right: auto;"><img border="0" data-original-height="565" data-original-width="1024" height="354" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiyEyCuvlZIYA-jgu_VK-DCbBxocYRxwqUjyaKsTHejg2iaYc-5vKAXX8PDRbNoS0fr84JG2GfAxQP79swvhCre1Y2sfD4M_cpviFHalHLouFvfkjKVyN8J4HZiDMSmusNHbmU40o6aN6E/w640-h354/Montes_Caucasus_AS15-M-1536.jpg" width="640" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;">Caucasus Mountains (Image Credit: NASA Apollo 15)<br /></td></tr></tbody></table><div><br /></div>Simon J Astronomyhttp://www.blogger.com/profile/10707322644136916455noreply@blogger.com0