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Dr Ski
Valencia Observatory
Valencia Observatory
12/20/2019
04:00 am
04:00 am
Canon EOS M100, 90mm Mak-Cas
Prime focus at 150X
1/15s@ISO2500
Nice morning for high magnification observing.
For reference, the 900ft. tall Straight Wall is 67mi long. The tiny crater below the center of the Wall is Birt. I'm not sure where Ernie is!
Schiller crater was formed by a meteor or asteroid flying in at a low angle. I guess.
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