Difference between revisions of "April 8, 2009"
(Created page with "__NOTOC__ =Rilles Almost All Around= <!-- ws:start:WikiTextHeadingRule:2:<h1> --> <!-- ws:start:WikiTextLocalImageRule:8:<img src="/file/view/LPOD-Apr8-09.jpg...") |
|||
| Line 6: | Line 6: | ||
<em>image by [mailto:dpeach_78@yahoo.co.uk Damian Peach]</em><br /> | <em>image by [mailto:dpeach_78@yahoo.co.uk Damian Peach]</em><br /> | ||
<br /> | <br /> | ||
| − | No, the vertical line crossing the top half of Arzachel's floor is not a mosaic seam boundary. It is the best view so far of a straight rille that was detected [mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | + | No, the vertical line crossing the top half of Arzachel's floor is not a mosaic seam boundary. It is the best view so far of a straight rille that was detected [http://www.lpod.org/?m=20060717 previously]. With Damian's new image, there is a suggestion that the radial rille is tenuously crossed by a crater chain/rille extending from the bird's foot end of the Arzachel Rille. Opposite [http://www.lpod.org/?m=20060916 lighting] supports this interpretation, but it is not certain if the connection is real. Damian's impressive image also confirms faint, apparently degraded rille segments cutting a rubbly area of the southern part of the floor. Thus, rilles have been imaged on three sides of Arzachel's floor; it will be interesting when modern orbiter images become available - or terrestrial imagers make the next quantum improvement - if rilles are found on the western side. If a crater floor moved up or down, I'd expect all parts to be fractured.<br /> |
| + | <br /> | ||
| + | <em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br /> | ||
<br /> | <br /> | ||
<strong>Technical Details</strong><br /> | <strong>Technical Details</strong><br /> | ||
Revision as of 20:38, 1 January 2015
Rilles Almost All Around
image by Damian Peach
No, the vertical line crossing the top half of Arzachel's floor is not a mosaic seam boundary. It is the best view so far of a straight rille that was detected previously. With Damian's new image, there is a suggestion that the radial rille is tenuously crossed by a crater chain/rille extending from the bird's foot end of the Arzachel Rille. Opposite lighting supports this interpretation, but it is not certain if the connection is real. Damian's impressive image also confirms faint, apparently degraded rille segments cutting a rubbly area of the southern part of the floor. Thus, rilles have been imaged on three sides of Arzachel's floor; it will be interesting when modern orbiter images become available - or terrestrial imagers make the next quantum improvement - if rilles are found on the western side. If a crater floor moved up or down, I'd expect all parts to be fractured.
Chuck Wood
Technical Details
April 3, 2009; approx. 20:00 UTC. 14" telescope at 51°35"N, 00°45"W. Lunar altitude: 59°.
Related Links
Rükl plate 55
COMMENTS?
Click on this icon File:PostIcon.jpg at the upper right to post a comment.
