Difference between revisions of "September 10, 2009"

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=Oddities=
 
=Oddities=
 
 
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<em>image by [mailto:swalker@skyandtelescope.com Sean Walker]</em>  Manchester, NH.<br />
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<em>image by [mailto:swalker@skyandtelescope.com" rel="nofollow Sean Walker]</em>  Manchester, NH.<br />
 
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How many oddities do you see in this image?<br />
 
How many oddities do you see in this image?<br />
The craters, Atlas and Hercules in front and Endymion, the smooth-floored one near the terminator, don't count. Lets start with the obvious - the concentric rilles and dark halo craters that yank Atlas from the classification of normal complex crater into the more exclusive floor-fractured category. What else? Hmm. How about the mare ridge like feature down the middle of Endymion. Does this mean the floor material is lava? Probably - it is dark at [http://www.lpi.usra.edu/resources/cla/info/ai/ full Moon]. Ok, something else. Notice the small bright spot to the bottom right of Atlas. [http://www.mapaplanet.org/explorer-bin/explorer.cgi?map=Moon&amp;layers=moon_clementine_base_v2&amp;west=48.34&amp;south=45.86&amp;east=51.15&amp;north=47.28&amp;center_lat=&amp;center=49.745&amp;defaultcenter=on&amp;grid=none&amp;stretch=none&amp;projection=SIMP&amp;r=1&amp;g=1&amp;b=1&amp;advoption=NO&amp;info=NO&amp;resolution=256&amp;scale=0.23690&amp;imageTopX=-85402.8750136495&amp;imageTopY=1455402.3929163814 Clementine] shows it to be a fresh oblique impact crater with a zone of avoidance (to the bottom right) just like Proclus. Sean's low Sun image reveals that the bright pit is at the south end of a little hill that casts a shadow. There is no sign of the &quot;hill&quot; on Clementine, but there is a dark, unrayed zone, in the same spot. Hmm. One final odd feature - notice the line of bright hills north of Hercules that extends toward Endymion? Is it real, or a chance alignment that our eyes and brains, at least mine, make more out of then is there? Clementine does [http://www.mapaplanet.org/explorer-bin/explorer.cgi?map=Moon&amp;layers=moon_clementine_base_v2&amp;west=36.50&amp;south=46.70&amp;east=47.73&amp;north=52.39&amp;center_lat=&amp;center=42.115&amp;defaultcenter=on&amp;grid=none&amp;stretch=none&amp;projection=SIMP&amp;r=1&amp;g=1&amp;b=1&amp;advoption=NO&amp;info=NO&amp;resolution=64&amp;scale=0.94760&amp;imageTopX=-340663.8953387737&amp;imageTopY=1674891.3352191448 show] that there are little ridges and bright spots, but does not answer the question. What is your opinion (backed up by images)?<br />
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The craters, Atlas and Hercules in front and Endymion, the smooth-floored one near the terminator, don't count. Lets start with the obvious - the concentric rilles and dark halo craters that yank Atlas from the classification of normal complex crater into the more exclusive floor-fractured category. What else? Hmm. How about the mare ridge like feature down the middle of Endymion. Does this mean the floor material is lava? Probably - it is dark at [http://www.lpi.usra.edu/resources/cla/info/ai/" rel="nofollow full Moon]. Ok, something else. Notice the small bright spot to the bottom right of Atlas. [http://www.mapaplanet.org/explorer-bin/explorer.cgi?map=Moon&amp;layers=moon_clementine_base_v2&amp;west=48.34&amp;south=45.86&amp;east=51.15&amp;north=47.28&amp;center_lat=&amp;center=49.745&amp;defaultcenter=on&amp;grid=none&amp;stretch=none&amp;projection=SIMP&amp;r=1&amp;g=1&amp;b=1&amp;advoption=NO&amp;info=NO&amp;resolution=256&amp;scale=0.23690&amp;imageTopX=-85402.8750136495&amp;imageTopY=1455402.3929163814" rel="nofollow Clementine] shows it to be a fresh oblique impact crater with a zone of avoidance (to the bottom right) just like Proclus. Sean's low Sun image reveals that the bright pit is at the south end of a little hill that casts a shadow. There is no sign of the &quot;hill&quot; on Clementine, but there is a dark, unrayed zone, in the same spot. Hmm. One final odd feature - notice the line of bright hills north of Hercules that extends toward Endymion? Is it real, or a chance alignment that our eyes and brains, at least mine, make more out of then is there? Clementine does [http://www.mapaplanet.org/explorer-bin/explorer.cgi?map=Moon&amp;layers=moon_clementine_base_v2&amp;west=36.50&amp;south=46.70&amp;east=47.73&amp;north=52.39&amp;center_lat=&amp;center=42.115&amp;defaultcenter=on&amp;grid=none&amp;stretch=none&amp;projection=SIMP&amp;r=1&amp;g=1&amp;b=1&amp;advoption=NO&amp;info=NO&amp;resolution=64&amp;scale=0.94760&amp;imageTopX=-340663.8953387737&amp;imageTopY=1674891.3352191448" rel="nofollow show] that there are little ridges and bright spots, but does not answer the question. What is your opinion (backed up by images)?<br />
 
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<em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br />
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<em>[mailto:tychocrater@yahoo.com" rel="nofollow Chuck Wood]</em><br />
 
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<strong>Technical Details</strong><br />
 
<strong>Technical Details</strong><br />
Sept 6, 2009. C-14 f/11, DMK21AU04.AS, Baader IR-pass filter; excerpt from a  [http://lpod.wikispaces.com/file/detail/Northeast_09-09-06_SeanWalker_Sep-10-2009_LPOD_supplement.jpg mosaic of 12 frames] (3:56 and 4:10 UT).<br />
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Sept 6, 2009. C-14 f/11, DMK21AU04.AS, Baader IR-pass filter; excerpt from a  [http://lpod.wikispaces.com/file/detail/Northeast_09-09-06_SeanWalker_Sep-10-2009_LPOD_supplement.jpg" rel="nofollow mosaic of 12 frames] (3:56 and 4:10 UT).<br />
 
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<strong>Related Links</strong><br />
 
<strong>Related Links</strong><br />
 
Rükl plates [http://the-moon.wikispaces.com/R%C3%BCkl+7 7], [http://the-moon.wikispaces.com/R%C3%BCkl+14 14] &amp; [http://the-moon.wikispaces.com/R%C3%BCkl+15 15]<br />
 
Rükl plates [http://the-moon.wikispaces.com/R%C3%BCkl+7 7], [http://the-moon.wikispaces.com/R%C3%BCkl+14 14] &amp; [http://the-moon.wikispaces.com/R%C3%BCkl+15 15]<br />
An overhead [http://www.lpod.org/?m=20060902 view] of Endymion.<br />
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An overhead [http://www.lpod.org/?m=20060902" rel="nofollow view] of Endymion.<br />
 
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Revision as of 19:12, 4 January 2015

Oddities

LPOD-Sept10-09.jpg
image by " rel="nofollow Sean Walker Manchester, NH.

How many oddities do you see in this image?
The craters, Atlas and Hercules in front and Endymion, the smooth-floored one near the terminator, don't count. Lets start with the obvious - the concentric rilles and dark halo craters that yank Atlas from the classification of normal complex crater into the more exclusive floor-fractured category. What else? Hmm. How about the mare ridge like feature down the middle of Endymion. Does this mean the floor material is lava? Probably - it is dark at " rel="nofollow full Moon. Ok, something else. Notice the small bright spot to the bottom right of Atlas. " rel="nofollow Clementine shows it to be a fresh oblique impact crater with a zone of avoidance (to the bottom right) just like Proclus. Sean's low Sun image reveals that the bright pit is at the south end of a little hill that casts a shadow. There is no sign of the "hill" on Clementine, but there is a dark, unrayed zone, in the same spot. Hmm. One final odd feature - notice the line of bright hills north of Hercules that extends toward Endymion? Is it real, or a chance alignment that our eyes and brains, at least mine, make more out of then is there? Clementine does " rel="nofollow show that there are little ridges and bright spots, but does not answer the question. What is your opinion (backed up by images)?

" rel="nofollow Chuck Wood

Technical Details
Sept 6, 2009. C-14 f/11, DMK21AU04.AS, Baader IR-pass filter; excerpt from a " rel="nofollow mosaic of 12 frames (3:56 and 4:10 UT).

Related Links
Rükl plates 7, 14 & 15
An overhead " rel="nofollow view of Endymion.