Difference between revisions of "October 12, 2006"

From LPOD
Jump to: navigation, search
 
(7 intermediate revisions by the same user not shown)
Line 1: Line 1:
 
__NOTOC__
 
__NOTOC__
 
=A Fault and a Gaggle of Domes=
 
=A Fault and a Gaggle of Domes=
 +
<!-- Start of content -->
 +
<div class="post" id="post-626">
  
+
<div class="storycontent">
<div class="post" id="post-626">
+
<p>[[File:Cauchy-Bosman.jpg|Cauchy-Bosman.jpg]]<br />
 
<div class="storycontent">
 
<p>[[File:Cauchy-Bosman.jpg|Cauchy-Bosman.jpg]]<br />
 
 
<em>image by [mailto:richard@astrofotografie.nl  Richard Bosman], Enschede, Netherlands</em></p>
 
<em>image by [mailto:richard@astrofotografie.nl  Richard Bosman], Enschede, Netherlands</em></p>
<p>The Cauchy area is one of the most fascinating places on the Moon. It includes one of the few major lunar faults, a nearby rille and a high concentration of domes. Richard comments that he can see 13 domes - how many do you count on his wonderful image? Some of the domes are classic hemispheric caps with a central pit, and a few - most obviously Cauchy Omega at the far right - have flattened summits, and Cauchy Tau (left of Omega) has an irregular surface with a small peak. I am intrigued by something I don&#8217;t remember seeing before. The rille at the base of the Cauchy Scarp is known - I published a description of it in 1966 - but I was unaware that at its eastern end the rille climbed up the scarp and continued a short distance across the mare. But after seeing it on Richard&#8217;s image a check shows that it is also barely visible on the oblique Apollo 8 [http://www.lpod.org/archive/archive/2004/01/LPOD-2004-01-02.htm view]. And after a gap, the western end of the rille continues a few kilometers further. As I look at the Apollo and especially Richard&#8217;s image I begin to question if the feature I call a rille actually is one, of if it is a smaller fault at the base of the big scarp. Actually, looking closely at the US Geological Survey&#8217;s [http://www.lpod.org/coppermine/displayimage.php?album=lastup&#038;cat=0&#038;pos=0 image] of the scarp makes it look like the feature is a narrow flat-topped ridge. This is confusing - perhaps someday the SMART-1 image of this area will be released, answering the question.</p>
+
<p>The Cauchy area is one of the most fascinating places on the Moon. It includes one of the few major lunar faults, a nearby rille and a high concentration of domes. Richard comments that he can see 13 domes - how many do you count on his wonderful image? Some of the domes are classic hemispheric caps with a central pit, and a few - most obviously Cauchy Omega at the far right - have flattened summits, and Cauchy Tau (left of Omega) has an irregular surface with a small peak. I am intrigued by something I don&#8217;t remember seeing before. The rille at the base of the Cauchy Scarp is known - I published a description of it in 1966 - but I was unaware that at its eastern end the rille climbed up the scarp and continued a short distance across the mare. But after seeing it on Richard&#8217;s image a check shows that it is also barely visible on the oblique Apollo 8 [[January_2,_2004|view]]. And after a gap, the western end of the rille continues a few kilometers further. As I look at the Apollo and especially Richard&#8217;s image I begin to question if the feature I call a rille actually is one, of if it is a smaller fault at the base of the big scarp. Actually, looking closely at the US Geological Survey&#8217;s [http://www.lpod.org/coppermine/displayimage.php?album=lastup&#038;cat=0&#038;pos=0 image] of the scarp makes it look like the feature is a narrow flat-topped ridge. This is confusing - perhaps someday the SMART-1 image of this area will be released, answering the question.</p>
 
<p>[mailto:tychocrater@yahoo.com Chuck Wood]</p>
 
<p>[mailto:tychocrater@yahoo.com Chuck Wood]</p>
 
<p><b>Technical Details:</b><br />
 
<p><b>Technical Details:</b><br />
Line 15: Line 14:
 
Rükl plates ? <em>(don&#8217;t have the book with me)</em><br />
 
Rükl plates ? <em>(don&#8217;t have the book with me)</em><br />
 
[http://www.astrofotografie.nl/ Richard&#8217;s website]<br />
 
[http://www.astrofotografie.nl/ Richard&#8217;s website]<br />
[http://www.lpod.org/archive/LPOD-2004-11-29.htm Paolo&#8217;s image of the area]</p>
+
[[November_29,_2004|Paolo&#8217;s image of the area]]</p>
<p align="center">
+
<p><b>Yesterday's LPOD:</b> [[October 11, 2006|A Previously Unimaged Crater]] </p>
<i>Now you can support LPOD when you buy any book from Amazon thru [http://www.lpod.org/?page_id=102  LPOD!]</i></p>
+
<p><b>Tomorrow's LPOD:</b> [[October 13, 2006|Mercy, Mersenius!]] </p>
</div>
+
<!-- Removed reference to store page 2 -->
+
</div>
 
+
<!-- End of content -->
----
+
{{wiki/ArticleFooter}}
===COMMENTS?===
 
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment.
 

Latest revision as of 23:42, 8 February 2015

A Fault and a Gaggle of Domes

Cauchy-Bosman.jpg
image by Richard Bosman, Enschede, Netherlands

The Cauchy area is one of the most fascinating places on the Moon. It includes one of the few major lunar faults, a nearby rille and a high concentration of domes. Richard comments that he can see 13 domes - how many do you count on his wonderful image? Some of the domes are classic hemispheric caps with a central pit, and a few - most obviously Cauchy Omega at the far right - have flattened summits, and Cauchy Tau (left of Omega) has an irregular surface with a small peak. I am intrigued by something I don’t remember seeing before. The rille at the base of the Cauchy Scarp is known - I published a description of it in 1966 - but I was unaware that at its eastern end the rille climbed up the scarp and continued a short distance across the mare. But after seeing it on Richard’s image a check shows that it is also barely visible on the oblique Apollo 8 view. And after a gap, the western end of the rille continues a few kilometers further. As I look at the Apollo and especially Richard’s image I begin to question if the feature I call a rille actually is one, of if it is a smaller fault at the base of the big scarp. Actually, looking closely at the US Geological Survey’s image of the scarp makes it look like the feature is a narrow flat-topped ridge. This is confusing - perhaps someday the SMART-1 image of this area will be released, answering the question.

Chuck Wood

Technical Details:
280 mm SCT + 3X barlow + ATK-2HS camera + Astron R filter.

Related Links:
Rükl plates ? (don’t have the book with me)
Richard’s website
Paolo’s image of the area

Yesterday's LPOD: A Previously Unimaged Crater

Tomorrow's LPOD: Mercy, Mersenius!


COMMENTS?

Register, Log in, and join in the comments.