While observing the Moon last night, I was looking at the northern part of the terminator and noticed a fairly large crater with a mostly shadow-filled floor... except for a narrow wedge of greyish light running across it's midsection. It was a most remarkable sight!
I'd been taking some images a few minutes earlier and unknowingly captured it in the one shown below. The crater is in the extreme upper left corner and the "thin grey wedge" can just be seen.
What crater is it?
Has anybody else here noticed this lighting effect before??
Thanks for your insights!
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A few telescopes of dubious value.
Understanding wife and three curious cats.