Two large craters sit on the terminator in this image: Albategnius (dia. 114 km) and Hipparchus (dia. 138 km). Notice the long shadow cast by the Albategnius’ central peak. The three large craters above this duo are: Arzachel (dia. 96 km), Alphonsus (dia. 108 km), and Ptolemaeus (dia. 164 km).
Date: October 7, 2012
Location: Dominion Astrophysical Observatory, Victoria, BC
Lunation: 21 days
Optics: TeleVue NP-127is with 2.5x Powermate, f/13
Camera: 41AF02.AS Imaging Source Camera