Difference between revisions of "September 23, 2011"
| Line 1: | Line 1: | ||
__NOTOC__ | __NOTOC__ | ||
=Ray Day= | =Ray Day= | ||
| − | |||
<!-- ws:start:WikiTextHeadingRule:0:<h1> --> | <!-- ws:start:WikiTextHeadingRule:0:<h1> --> | ||
<!-- ws:start:WikiTextLocalImageRule:6:<img src="/file/view/LPOD-Sept23-11.jpg/257285990/1120x1248/LPOD-Sept23-11.jpg" alt="" title="" style="height: 1248px; width: 1120px;" /> -->[[File:LPOD-Sept23-11.jpg|LPOD-Sept23-11.jpg]]<!-- ws:end:WikiTextLocalImageRule:6 --><br /> | <!-- ws:start:WikiTextLocalImageRule:6:<img src="/file/view/LPOD-Sept23-11.jpg/257285990/1120x1248/LPOD-Sept23-11.jpg" alt="" title="" style="height: 1248px; width: 1120px;" /> -->[[File:LPOD-Sept23-11.jpg|LPOD-Sept23-11.jpg]]<!-- ws:end:WikiTextLocalImageRule:6 --><br /> | ||
| − | <em>image by [mailto:BrendanShaw@btinternet.com Brendan Shaw] and LRO [http://target.lroc.asu.edu/da/qmap.html Quick Map]</em><br /> | + | <em>image by [mailto:BrendanShaw@btinternet.com" rel="nofollow Brendan Shaw] and LRO [http://target.lroc.asu.edu/da/qmap.html" rel="nofollow Quick Map]</em><br /> |
<br /> | <br /> | ||
| − | In Brendan's excellent high resolution image of the Mare Frigoris and north polar region (top) I was taken by many features but in particular the rays coming from [http://the-moon.wikispaces.com/Anaxagoras Anaxagoras] crossing [http://the-moon.wikispaces.com/Meton Meton]. I enhanced a rectified view of his image and had a look at them (lower right) from overhead, and then had a look at the LRO imagery from the [http://target.lroc.asu.edu/da/qmap.html ACT-REACT] north polar region map (lower left). I did notice that one ray (arrowed) crossing Meton seems rather turbulent and braided in the rectified (LTVT) contrast enhanced view of Brendans image. Anaxagoras seems rather pentagonal in shape, and is formed from a possible oblique impact. Meton is old and plains filled, I am assuming from Imbrium ejecta to the south. But what would cause braiding of the rays? Assuming it is just random secondaries impacts as there is a lot of crater chains in the WAC images when you zoom in closer. But could they be influenced by the local topography, as fluid would be by gaps in mountain passes? I see a low point in an old crater wall of Scoresby W there. Whatever the cause, that great image of Brendan's got me thinking about the lunar rays and whether fluid dynamics plays a roll in their distribution as it does in many other facets of nature.<br /> | + | In Brendan's excellent high resolution image of the Mare Frigoris and north polar region (top) I was taken by many features but in particular the rays coming from [http://the-moon.wikispaces.com/Anaxagoras Anaxagoras] crossing [http://the-moon.wikispaces.com/Meton Meton]. I enhanced a rectified view of his image and had a look at them (lower right) from overhead, and then had a look at the LRO imagery from the [http://target.lroc.asu.edu/da/qmap.html" rel="nofollow ACT-REACT] north polar region map (lower left). I did notice that one ray (arrowed) crossing Meton seems rather turbulent and braided in the rectified (LTVT) contrast enhanced view of Brendans image. Anaxagoras seems rather pentagonal in shape, and is formed from a possible oblique impact. Meton is old and plains filled, I am assuming from Imbrium ejecta to the south. But what would cause braiding of the rays? Assuming it is just random secondaries impacts as there is a lot of crater chains in the WAC images when you zoom in closer. But could they be influenced by the local topography, as fluid would be by gaps in mountain passes? I see a low point in an old crater wall of Scoresby W there. Whatever the cause, that great image of Brendan's got me thinking about the lunar rays and whether fluid dynamics plays a roll in their distribution as it does in many other facets of nature.<br /> |
<br /> | <br /> | ||
| − | [mailto:mauricejscollins@hotmail.com Maurice Collins]<br /> | + | [mailto:mauricejscollins@hotmail.com" rel="nofollow Maurice Collins]<br /> |
<br /> | <br /> | ||
<strong>Technical Details</strong><br /> | <strong>Technical Details</strong><br /> | ||
Revision as of 22:21, 4 January 2015
Ray Day
image by " rel="nofollow Brendan Shaw and LRO " rel="nofollow Quick Map
In Brendan's excellent high resolution image of the Mare Frigoris and north polar region (top) I was taken by many features but in particular the rays coming from Anaxagoras crossing Meton. I enhanced a rectified view of his image and had a look at them (lower right) from overhead, and then had a look at the LRO imagery from the " rel="nofollow ACT-REACT north polar region map (lower left). I did notice that one ray (arrowed) crossing Meton seems rather turbulent and braided in the rectified (LTVT) contrast enhanced view of Brendans image. Anaxagoras seems rather pentagonal in shape, and is formed from a possible oblique impact. Meton is old and plains filled, I am assuming from Imbrium ejecta to the south. But what would cause braiding of the rays? Assuming it is just random secondaries impacts as there is a lot of crater chains in the WAC images when you zoom in closer. But could they be influenced by the local topography, as fluid would be by gaps in mountain passes? I see a low point in an old crater wall of Scoresby W there. Whatever the cause, that great image of Brendan's got me thinking about the lunar rays and whether fluid dynamics plays a roll in their distribution as it does in many other facets of nature.
" rel="nofollow Maurice Collins
Technical Details
Mewlon 250 (10") and DMK31 imager
2011-09-15 0226UT
Related Links
Rükl plate 4 and 5
