August 1, 2009
What is Undarum?
//left image by Stefan Lammel, Uxbridge, England; right image from Clementine
The irregular maria are typically small and seem to occur by happenstance. But few things on the Moon don’t have a story, so what is it for Mare Undarum? Stefan’s best-ever from Earth image shows that Undarum is a roughly circular (if you mentally correct for foreshortening or look at the Clementine image) patch of dark maria that fill low spots (ancient craters probably) and, like Australe, younger craters (Dubiago, Condorcet P & F, and Firmicus at left center). The circular shape suggests that the mare material fills a small lunar basin but there is no evidence, other than the lavas themselves, to suggest a prior depression. Indeed, topomaps show this to be a high area, and a crustal thickness Chuck Wood
This is a classic LPOD from Jan 18, 2007
Technical Details
7 Nov 2006, 00:27 UT. 10″ f4.8 Newtonian, DMK 21AF04, 4x PowerMate, red filter, Registax v4, PSE 5, 60fps, 1/60s, 600/5000, MAP: 29×64.
Related Links:
Rükl plate 38
Stefan’s website
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