L75 - Ptolemaeus B

Within the 93 mile diameter crater of Ptolemaeus, there are several craterlets. Ptolemaeus B is a very subtle saucer that requires the proper shadowing to reveal.

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Images © Doug Anderson

This image was taken on 26-May-2004 through a 203mm Celestron C-8 Schmidt-Cassegrain reflector with f/6.3 focal reducer afocally coupled to an Olympus C-700 digital camera through a 40mm eyepiece.