Difference between revisions of "November 22, 2008"

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<em>iimage by [mailto:dpeach_78@yahoo.co.uk Damian Peach]</em><br />
 
<em>iimage by [mailto:dpeach_78@yahoo.co.uk Damian Peach]</em><br />
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<em>This is an update of a classic LPOD from [http://www.lpod.org/?m=20070108 Jan 7, 2007] - can you spot the change?.</em><br />
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<em>This is an update of a classic LPOD from [[January_8,_2007|Jan 7, 2007]] - can you spot the change?.</em><br />
 
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Far out on the Moon’s southeast limb is [http://www.lpod.org/archive/archive/2004/05/LPOD-2004-05-18.htm Mare Australe], a rimless collection of mare-filled craters and mare patches that are all that’s left of an ancient impact basin. The features in Australe are too squashed by foreshortening to be well studied from Earth, until now. Damian has captured a remarkable high resolution, low-Sun view of [http://the-moon.wikispaces.com/Lyot Lyot], the largest crater within Australe. A relatively high-Sun [http://www3.nhk.or.jp/kaguya/archive/original/kaguya025.jpg Kaguya] image shows that the northwestern quadrant of Lyot is dark mare and the rest is older and perhaps dusted by highland ejecta. On Damian’s image this difference is indicated by the greater number of craters and greater roughness of the southern part of the floor. A few mare ridges and a ghost crater are visible on the floor, but most interestingly - and apparently unknown - is the large dome at the northern end of the floor. Its diameter is 13 km - scaled from the 38 km length of Lyot A, the bright crater at upper left. The existence of this dome is interesting because Australe, despite its abundance of mare has few small volcanic eruption landforms such as domes, sinuous rilles and volcanic dark halo craters. But while researching this dome I discovered one more and a swell on another part of Australe!<br />
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Far out on the Moon’s southeast limb is [[May_18,_2004|Mare Australe]], a rimless collection of mare-filled craters and mare patches that are all that’s left of an ancient impact basin. The features in Australe are too squashed by foreshortening to be well studied from Earth, until now. Damian has captured a remarkable high resolution, low-Sun view of [https://the-moon.us/wiki/Lyot Lyot], the largest crater within Australe. A relatively high-Sun [http://www3.nhk.or.jp/kaguya/archive/original/kaguya025.jpg Kaguya] image shows that the northwestern quadrant of Lyot is dark mare and the rest is older and perhaps dusted by highland ejecta. On Damian’s image this difference is indicated by the greater number of craters and greater roughness of the southern part of the floor. A few mare ridges and a ghost crater are visible on the floor, but most interestingly - and apparently unknown - is the large dome at the northern end of the floor. Its diameter is 13 km - scaled from the 38 km length of Lyot A, the bright crater at upper left. The existence of this dome is interesting because Australe, despite its abundance of mare has few small volcanic eruption landforms such as domes, sinuous rilles and volcanic dark halo craters. But while researching this dome I discovered one more and a swell on another part of Australe!<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 />
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Rükl plate [http://the-moon.wikispaces.com/Rukl+76 76]<br />
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Rükl plate [https://the-moon.us/wiki/Rükl_76 76]<br />
 
Damian's [http://www.damianpeach.com/lunar.htm website]<br />
 
Damian's [http://www.damianpeach.com/lunar.htm website]<br />
 
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<p><b>Yesterday's LPOD:</b> [[November 21, 2008|A Rim]] </p>
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<p><b>Tomorrow's LPOD:</b> [[November 23, 2008|Moment of Impact]] </p>
 
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Latest revision as of 20:56, 18 August 2018

A Dome On the Limb

LPOD-Nov22-08.jpg
iimage by Damian Peach
This is an update of a classic LPOD from Jan 7, 2007 - can you spot the change?.

Far out on the Moon’s southeast limb is Mare Australe, a rimless collection of mare-filled craters and mare patches that are all that’s left of an ancient impact basin. The features in Australe are too squashed by foreshortening to be well studied from Earth, until now. Damian has captured a remarkable high resolution, low-Sun view of Lyot, the largest crater within Australe. A relatively high-Sun Kaguya image shows that the northwestern quadrant of Lyot is dark mare and the rest is older and perhaps dusted by highland ejecta. On Damian’s image this difference is indicated by the greater number of craters and greater roughness of the southern part of the floor. A few mare ridges and a ghost crater are visible on the floor, but most interestingly - and apparently unknown - is the large dome at the northern end of the floor. Its diameter is 13 km - scaled from the 38 km length of Lyot A, the bright crater at upper left. The existence of this dome is interesting because Australe, despite its abundance of mare has few small volcanic eruption landforms such as domes, sinuous rilles and volcanic dark halo craters. But while researching this dome I discovered one more and a swell on another part of Australe!

Chuck Wood

Technical Details
6 November, 2006. C14 @ F25. Lumenera Skynyx 2.0M.

Related Links
Rükl plate 76
Damian's website

Yesterday's LPOD: A Rim

Tomorrow's LPOD: Moment of Impact

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