Several nights ago after looking comet L4 Panstarrs I directed the scope (90/621 refractor) to the Moon and with some 60x in Montes Carpatus' terminator area I could see a marvelous circle of a crater lit in very whitish hue with two lines outside just like the symbol for diameter (Ø) but without inside line.
I think that was a night after Copernico's dawn in the lunation.
Has somebody imaged this crater in this very moment or looked at it?
Looking up the Rükl Atlas I think the crater is Tobias Mayer A (plates 19-20 ) but I'm not sure. Reminded me another unique and special features like the Lunar "V" or "X".
Any image/sighting of Tobias Mayer A in sunrise?
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