Difference between revisions of "August 4, 2009"

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=More Rilles=
 
=More Rilles=
 
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<em>image by [mailto:slamm@blueyonder.co.uk Stefan Lammel]</em><br />
 
<em>image by [mailto:slamm@blueyonder.co.uk Stefan Lammel]</em><br />
 
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Sheet E7 of the <em>[http://the-moon.wikispaces.com/System+of+Lunar+Craters System of Lunar Craters]</em> includes the last official designations for the Ramsden rilles. Like [http://lpod.armoredpenguin.com/wiki/July+27%2C+2009 de Gasparis and Palmieri], Ramsden is a focal point for small linear rilles, but in this case the rilles cut the [http://www.mapaplanet.org/explorer-bin/explorer.cgi?map=Moon&amp;layers=moon_clementine_base_v2&amp;west=326.70&amp;south=-33.64&amp;east=329.51&amp;north=-32.23&amp;center_lat=&amp;center=328.105&amp;defaultcenter=on&amp;grid=none&amp;stretch=none&amp;projection=SIMP&amp;advoption=NO&amp;info=NO&amp;resolution=256 rim] but do not appear to cross its floor. The rilles drawn in E7 are easy to match with the better detail that we now have with Stefan's image, and an addition rille is distinct enough that I have added the number VII to. I thought that because this rille extends near Mercator that perhaps it should be numbered for that crater, but finally decided that adding it to the Ramsden system made more sense because it may be structurally related. But its curvature is also consistent with that of the Hippalus rilles to the north - this just illustrates that often nomenclature decisions have to be made without as much geologic understanding as is desirable. <br />
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Sheet E7 of the <em>[https://the-moon.us/wiki/System_of_Lunar_Craters System of Lunar Craters]</em> includes the last official designations for the Ramsden rilles. Like [[July_27,_2009|de Gasparis and Palmieri]], Ramsden is a focal point for small linear rilles, but in this case the rilles cut the [http://www.mapaplanet.org/explorer-bin/explorer.cgi?map=Moon&amp;layers=moon_clementine_base_v2&amp;west=326.70&amp;south=-33.64&amp;east=329.51&amp;north=-32.23&amp;center_lat=&amp;center=328.105&amp;defaultcenter=on&amp;grid=none&amp;stretch=none&amp;projection=SIMP&amp;advoption=NO&amp;info=NO&amp;resolution=256 rim] but do not appear to cross its floor. The rilles drawn in E7 are easy to match with the better detail that we now have with Stefan's image, and an addition rille is distinct enough that I have added the number VII to. I thought that because this rille extends near Mercator that perhaps it should be numbered for that crater, but finally decided that adding it to the Ramsden system made more sense because it may be structurally related. But its curvature is also consistent with that of the Hippalus rilles to the north - this just illustrates that often nomenclature decisions have to be made without as much geologic understanding as is desirable. <br />
 
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<em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br />
 
<em>[mailto:tychocrater@yahoo.com Chuck Wood]</em><br />
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<strong>Related Links</strong><br />
 
<strong>Related Links</strong><br />
Rükl plate [http://the-moon.wikispaces.com/Rukl+63 63]<br />
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Rükl plate [https://the-moon.us/wiki/Rükl_63 63]<br />
 
See Stefan's entire [http://www.pbase.com/image/115613331/original mosaic]<br />
 
See Stefan's entire [http://www.pbase.com/image/115613331/original mosaic]<br />
An [http://lpod.armoredpenguin.com/wiki/May+30%2C+2008 interpretation] of the origin of the Ramsden rilles.<br />
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An [[May_30,_2008|interpretation]] of the origin of the Ramsden rilles.<br />
 
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<p><b>Yesterday's LPOD:</b> [[August 3, 2009|Slip Sliding Away]] </p>
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<p><b>Tomorrow's LPOD:</b> [[August 5, 2009|Tourist Moon]] </p>
 
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===COMMENTS?===
 
Click on this icon [[image:PostIcon.jpg]] at the upper right to post a comment.
 

Latest revision as of 05:52, 11 October 2018

More Rilles

LPOD-Aug4-09.jpg
image by Stefan Lammel

Sheet E7 of the System of Lunar Craters includes the last official designations for the Ramsden rilles. Like de Gasparis and Palmieri, Ramsden is a focal point for small linear rilles, but in this case the rilles cut the rim but do not appear to cross its floor. The rilles drawn in E7 are easy to match with the better detail that we now have with Stefan's image, and an addition rille is distinct enough that I have added the number VII to. I thought that because this rille extends near Mercator that perhaps it should be numbered for that crater, but finally decided that adding it to the Ramsden system made more sense because it may be structurally related. But its curvature is also consistent with that of the Hippalus rilles to the north - this just illustrates that often nomenclature decisions have to be made without as much geologic understanding as is desirable.

Chuck Wood

Technical Details
Jan 6, 2009, 2200 UT. 10in f4.8 Newtonian, Infinity 2-1M, 5x Powermate, green filter, Avistack, Registax v.5, PSE5, Focus Magic

Related Links
Rükl plate 63
See Stefan's entire mosaic
An interpretation of the origin of the Ramsden rilles.

Yesterday's LPOD: Slip Sliding Away

Tomorrow's LPOD: Tourist Moon



COMMENTS?

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