Difference between revisions of "June 11, 2012"
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<em>image by [mailto:dvmakastro@gmail.com Dmitry Makolkin], Moscow, Russia</em><br /> | <em>image by [mailto:dvmakastro@gmail.com Dmitry Makolkin], Moscow, Russia</em><br /> | ||
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| − | I like lunar limbs, and enjoy trying to identify craters seen increasingly in profile. This northern limb is from a huge [http://www.makolkin.ru/Gallery/120430/Moon_120430_dvmak.html mosaic] | + | I like lunar limbs, and enjoy trying to identify craters seen increasingly in profile. This northern limb is from a huge [http://www.makolkin.ru/Gallery/120430/Moon_120430_dvmak.html mosaic] |
| − | compiled by Dmitry gives another chance to explore. I have labeled a few features, and Howard Eskildsen produced an earlier | + | compiled by Dmitry gives another chance to explore. I have labeled a few features, and Howard Eskildsen produced an earlier |
| − | view with more craters labeled. I like seeing Nansen, a Copernicus-size crater that rarely appears in LPODs. From views like | + | view with more craters labeled. I like seeing Nansen, a Copernicus-size crater that rarely appears in LPODs. From views like |
| − | this Nansen looks to be a relatively fresh complex crater with central peaks, but looking at an overhead perspective I see that | + | this Nansen looks to be a relatively fresh complex crater with central peaks, but looking at an overhead perspective I see that |
| − | it is older and its floor partly covered with material that may have been pushed in by the formation of Houssay on its rim. Further | + | it is older and its floor partly covered with material that may have been pushed in by the formation of Houssay on its rim. Further |
| − | along the limb to the east is Hayn, a crater that really is a relatively fresh complex crater. It is difficult to see it under high Sun | + | along the limb to the east is Hayn, a crater that really is a relatively fresh complex crater. It is difficult to see it under high Sun |
| − | because it is somewhat near the pole but it may have rays, and might be the source for the mysterious one that cuts across the | + | because it is somewhat near the pole but it may have rays, and might be the source for the mysterious one that cuts across the |
| − | Mare of the Humboldtianum Basin. A crater that definitely has rays is Thales, which has a zone of avoidance toward the northwest, | + | Mare of the Humboldtianum Basin. A crater that definitely has rays is Thales, which has a zone of avoidance toward the northwest, |
| − | demonstrating that it formed from an oblique impact. One thing I never noticed before is that the zone of avoidance is darker than | + | demonstrating that it formed from an oblique impact. One thing I never noticed before is that the zone of avoidance is darker than |
| − | the ray-covered terrain on either side. The darker triangular area is reminiscent of Palus Somni, a feature named solely because | + | the ray-covered terrain on either side. The darker triangular area is reminiscent of Palus Somni, a feature named solely because |
| − | no ray crosses it.<br /> | + | no ray crosses it. |
| + | <br /> | ||
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<em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | <em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | ||
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<strong>Related Links</strong><br /> | <strong>Related Links</strong><br /> | ||
| − | Rükl plate [ | + | Rükl plate [https://the-moon.us/wiki/R%C3%BCkl_5 5]<br /> |
Dimitry's [http://www.makolkin.ru/Gallery/gallery.html Moon gallery]<br /> | Dimitry's [http://www.makolkin.ru/Gallery/gallery.html Moon gallery]<br /> | ||
<br /> | <br /> | ||
| + | <p><b>Yesterday's LPOD:</b> [[June 10, 2012|Painterly Ejecta]] </p> | ||
| + | <p><b>Tomorrow's LPOD:</b> [[June 12, 2012|Goodbye, Ancient Newton?]] </p> | ||
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Latest revision as of 18:49, 13 October 2018
Edgeland
image by Dmitry Makolkin, Moscow, Russia
I like lunar limbs, and enjoy trying to identify craters seen increasingly in profile. This northern limb is from a huge mosaic
compiled by Dmitry gives another chance to explore. I have labeled a few features, and Howard Eskildsen produced an earlier
view with more craters labeled. I like seeing Nansen, a Copernicus-size crater that rarely appears in LPODs. From views like
this Nansen looks to be a relatively fresh complex crater with central peaks, but looking at an overhead perspective I see that
it is older and its floor partly covered with material that may have been pushed in by the formation of Houssay on its rim. Further
along the limb to the east is Hayn, a crater that really is a relatively fresh complex crater. It is difficult to see it under high Sun
because it is somewhat near the pole but it may have rays, and might be the source for the mysterious one that cuts across the
Mare of the Humboldtianum Basin. A crater that definitely has rays is Thales, which has a zone of avoidance toward the northwest,
demonstrating that it formed from an oblique impact. One thing I never noticed before is that the zone of avoidance is darker than
the ray-covered terrain on either side. The darker triangular area is reminiscent of Palus Somni, a feature named solely because
no ray crosses it.
Chuck Wood
Technical Details
See original mosaic.
Related Links
Rükl plate 5
Dimitry's Moon gallery
Yesterday's LPOD: Painterly Ejecta
Tomorrow's LPOD: Goodbye, Ancient Newton?
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