April 25, 2018

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The Oklahoma Orbiter

Originally published December 17, 2008 LPOD-Dec-17-08.jpg
image by Wes Higgins, Oklahoma, USA

This is one of the best images of the Moon i've ever seen. The resolution is excellent and the tone is good, but more important is that the area is interesting. This is the area of the Littrow Rilles along the southeast corner of Mare Serenitatis. At the lower left is Dawes, an 18 km diameter crater that appears to be on an island of older, rille-cut mare. To the right, pass collapse troughs, is the angular fortress guarded by Mt. Argaeus, that contains the Apollo 17 landing site. I was surprised to see the rilles crossing the floor of this inter-montane area, and amazed to recognize the Scarp joining North and South massifs! To the north are the Littrow Rilles themselves, which clearly cross lava flows older than than the Serenitatis lavas to the west. Finally, at the top of the image within the breeched crater Le Monnier is a segment of a rille imaged by Apollo astronauts (Fig 224) and only 300-400 m wide. The Lunokhod 2 roamed the lunar surface in 1973 near this rille; I'm almost surprised that Wes' superb image does not catch any glint off it.

Chuck Wood

Technical Details
September 01, 2007 at ~10:48 UT. 18" reflector (presumably in low lunar orbit), 680nm IR pass filter, Infinity 2-1m camera, Avistack 2404 points, stack of 119 frames

Related Links
Rükl plates 24 and 25

Yesterday's LPOD: Mapping Names

Tomorrow's LPOD: M-Cubed


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