Difference between revisions of "March 5, 2008"

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<em>image by [mailto:thefamily90@hotmail.com Jim Phillips,] dome numbers from paper by Wöhler and colleagues</em><br />
 
<em>image by [mailto:thefamily90@hotmail.com Jim Phillips,] dome numbers from paper by Wöhler and colleagues</em><br />
 
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In 2005 Jim [http://www.lpod.org/archive/LPOD-2005-05-22.htm imaged] what I termed Domeland, the region west of Copernicus that abounds in domes of various types. And now he has revisited the zone, with larger image scale and higher resolution. Something else has changed since 2005 - we now know much more about lunar domes and the ones in this area because of the work of the [http://www.glrgroup.org/ Geologic Lunar Research Group], of which Jim is an active member. In 2006 the group published in <em>Icarus</em>, <u>the</u> professional journal of planetary science, the first modern [http://www.sciencedirect.com/science?_ob=ArticleURL&amp;_udi=B6WGF-4JT38N8-7&amp;_user=10&amp;_rdoc=1&amp;_fmt=&amp;_orig=search&amp;_sort=d&amp;view=c&amp;_acct=C000050221&amp;_version=1&amp;_urlVersion=0&amp;_userid=10&amp;md5=3619736d18994a66225f6cc38c4f235d paper] about the shapes and compositions of lunar domes. In the study, led by Christian Wöhler, the heights of domes M6 and M12 were found to be equal - 230 m - but M12 is much steeper (2.7° vs 1.3°), just as it looks in the image. The little dome M8 is steepest, all of 3.5°. Since this landmark paper the GLR has continued to investigate more domes. Two things are amazing about their work - its is done by amateur astronomers (although all are professionals in other fields), and it is largely based on amateur images such as Jims!<br />
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In 2005 Jim [[May_22,_2005|imaged]] what I termed Domeland, the region west of Copernicus that abounds in domes of various types. And now he has revisited the zone, with larger image scale and higher resolution. Something else has changed since 2005 - we now know much more about lunar domes and the ones in this area because of the work of the [http://www.glrgroup.org/ Geologic Lunar Research Group], of which Jim is an active member. In 2006 the group published in <em>Icarus</em>, <u>the</u> professional journal of planetary science, the first modern [http://www.sciencedirect.com/science?_ob=ArticleURL&amp;_udi=B6WGF-4JT38N8-7&amp;_user=10&amp;_rdoc=1&amp;_fmt=&amp;_orig=search&amp;_sort=d&amp;view=c&amp;_acct=C000050221&amp;_version=1&amp;_urlVersion=0&amp;_userid=10&amp;md5=3619736d18994a66225f6cc38c4f235d paper] about the shapes and compositions of lunar domes. In the study, led by Christian Wöhler, the heights of domes M6 and M12 were found to be equal - 230 m - but M12 is much steeper (2.7° vs 1.3°), just as it looks in the image. The little dome M8 is steepest, all of 3.5°. Since this landmark paper the GLR has continued to investigate more domes. Two things are amazing about their work - its is done by amateur astronomers (although all are professionals in other fields), and it is largely based on amateur images such as Jims!<br />
 
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<em>Chuck Wood</em><br />
 
<em>Chuck Wood</em><br />
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<strong>Related Links</strong><br />
 
<strong>Related Links</strong><br />
 
Rükl plate 30<br />
 
Rükl plate 30<br />
Two weeks in [http://www.lpod.org/?m=20061220 Domeland]<br />
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Two weeks in [[December_20,_2006|Domeland]]<br />
 
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<strong>Comments!</strong><br />
 
<strong>Comments!</strong><br />
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South is up in my image.<br />
 
South is up in my image.<br />
 
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Latest revision as of 22:11, 22 March 2015

Domeland: Known

LPOD-Mar5-08.jpg
image by Jim Phillips, dome numbers from paper by Wöhler and colleagues

In 2005 Jim imaged what I termed Domeland, the region west of Copernicus that abounds in domes of various types. And now he has revisited the zone, with larger image scale and higher resolution. Something else has changed since 2005 - we now know much more about lunar domes and the ones in this area because of the work of the Geologic Lunar Research Group, of which Jim is an active member. In 2006 the group published in Icarus, the professional journal of planetary science, the first modern paper about the shapes and compositions of lunar domes. In the study, led by Christian Wöhler, the heights of domes M6 and M12 were found to be equal - 230 m - but M12 is much steeper (2.7° vs 1.3°), just as it looks in the image. The little dome M8 is steepest, all of 3.5°. Since this landmark paper the GLR has continued to investigate more domes. Two things are amazing about their work - its is done by amateur astronomers (although all are professionals in other fields), and it is largely based on amateur images such as Jims!

Chuck Wood

Technical Details
Feb 16, 2008. TMB 8" F/9

Related Links
Rükl plate 30
Two weeks in Domeland

Comments!

Yesterday's LPOD: No News is Bad News

Tomorrow's LPOD: Ash-Buried History


COMMENTS

(1) I imaged exactly this region on February 16th 2008 at slightly lower sun angle, especially dome (M13) is more obvious in my picture.

You can see it here

South is up in my image.

- bdeclerc-lg.jpg bdeclerc


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