Difference between revisions of "November 3, 2006"

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<p>[[File:06_10_14_04_33_15_Triesnecker_Lammel.jpgs.jpg|06_10_14_04_33_15_Triesnecker_Lammel.jpgs.jpg]]<br />
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<p>[[File:06_10_14_04_33_15_Triesnecker_Lammel.jpgs.jpg|06_10_14_04_33_15_Triesnecker_Lammel.jpgs.jpg]]<br />
 
 
<em>image by [mailto: Stefan Lammel], Uxbridge, England</em></p>
 
<em>image by [mailto: Stefan Lammel], Uxbridge, England</em></p>
 
<p>Continuing east from yesterday&#8217;s LPOD takes us to one of the classic, but poorly understood, features on the Moon. Triesnecker is a 26 km wide complex crater whose ejecta is draped over the adjacent smooth terrain, but the feature of interest is a labyrinth of narrow linear rilles to the east. I don&#8217;t know why the rilles are here. Some rilles in other parts of the Moon are surface expressions of volcanic dikes (or dykes as spelled in UK); if these are also, the question is why was there such a concentration of dikes in this region? The low lighting and high resolution of Stefan&#8217;s shot emphasizes the undulating ground that the rilles cut. West of Triesnecker is a shallow depression that seems to be a broad [http://www.lpod.org/archive/LPOD-2004-07-25.htm valley] covered by whatever the smooth material is (wait for tomorrow).</p>
 
<p>Continuing east from yesterday&#8217;s LPOD takes us to one of the classic, but poorly understood, features on the Moon. Triesnecker is a 26 km wide complex crater whose ejecta is draped over the adjacent smooth terrain, but the feature of interest is a labyrinth of narrow linear rilles to the east. I don&#8217;t know why the rilles are here. Some rilles in other parts of the Moon are surface expressions of volcanic dikes (or dykes as spelled in UK); if these are also, the question is why was there such a concentration of dikes in this region? The low lighting and high resolution of Stefan&#8217;s shot emphasizes the undulating ground that the rilles cut. West of Triesnecker is a shallow depression that seems to be a broad [http://www.lpod.org/archive/LPOD-2004-07-25.htm valley] covered by whatever the smooth material is (wait for tomorrow).</p>
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===COMMENTS?===  
 
===COMMENTS?===  
 
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment.
 
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment.

Revision as of 17:44, 4 January 2015

Continuing East

06_10_14_04_33_15_Triesnecker_Lammel.jpgs.jpg
image by [mailto: Stefan Lammel], Uxbridge, England

Continuing east from yesterday’s LPOD takes us to one of the classic, but poorly understood, features on the Moon. Triesnecker is a 26 km wide complex crater whose ejecta is draped over the adjacent smooth terrain, but the feature of interest is a labyrinth of narrow linear rilles to the east. I don’t know why the rilles are here. Some rilles in other parts of the Moon are surface expressions of volcanic dikes (or dykes as spelled in UK); if these are also, the question is why was there such a concentration of dikes in this region? The low lighting and high resolution of Stefan’s shot emphasizes the undulating ground that the rilles cut. West of Triesnecker is a shallow depression that seems to be a broad valley covered by whatever the smooth material is (wait for tomorrow).

Chuck Wood

Technical Details:
14 October, 2006, 03.04 UT. 10″ f4.8 Newtonian + DMK21-AF0 + 4x Powermate. Registax v4: 600 frames from 5000; MAP: 12 x 128.

Related Links:
Rükl chart 33
Stefan’s website

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