Crater Guericke and the Alphonsus Arzachel Region. Note the small craterlets around Guericke that are very noticable very close to the terminator. The straight wall, Rupes Recta is also to the south. Crater Thebit D (2 miles) is just visible. Craters down to 3 miles are very visible. Taken with my ATIK 314e CCD and Sky-Watcher Equinox 120 ED APO on a Sky-Watcher EQ6 Pro mount driven by EQMOD.