September 30, 2020

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LRO Catches Up with Pau

Originally published March 26, 2011 LPOD-MAr26-11.jpg
large image at 200% by K.C. Paul, Hong Kong, and LRO inset from LRO nearside mosaic.

Perhaps this strange ridge-to-ridge rille west of the Straight Range looks familiar. I first noticed a piece of it on Alan Friedman's LPOD and them traced it on Lunar Orbiter IV images. KC's new image is the best depiction I've seen of the rille in telescopic imagery - it compares very favorably with the LRO WAC view (inset), including its extent beyond the southern-most ridge. The odd shallow crater near bottom center of KC's image has been discussed recently, with the end of the rille above noted as possibly continuing as an uncollapsed lava tube. As I stare at KC's image I begin to see at the edge of interpretability possible broad sinuous bends that could be the rille continuing south of the shallow crater. But there is no hint of them in the LRO view. I remind myself of the over-interpretation of photographic grain as real features on the Moon by Krieger in the early 1900s and quietly slink off to bed.
Chuck Wood

Technical Details
March 14, 2011 at 11h58m UT. 10" reflector + 2.5X barlow + DMK camera

Related Links
Rükl plate 11


Yesterday's LPOD: Hello From the Universe

Tomorrow's LPOD: Geology Lesson


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