Evening in the Ptolemaeus Chain and Rupes Recta Region, 2016 (digital photo)

Creator: Jordi Delpeix Borrell Ptolemaeus, Alphonsus and Arzachel, walled plains are simply large impact craters whose floors have been filled with lava, obliterating many traces of the original floor and central elevation. In the bottom part of this composite image (made up of two individual pictures) is Ptolemaeus, an ancient crater with no central peak but with multiple smaller craters across its floor surface. Born digital photograph entitled 'Evening in the Ptolemaeus Chain and Rupes Recta Region', by Jordi Delpeix Borrell, taken on 25th August 2016 in L'Ametlla del Valles, Barcelona, Spain Taken with a Celestron C14 355.6 mm f/11 Schmidt-Cassegrain telescope at f/19, Sky-Watcher NEQ6 Pro mount, ZWO ASI 174 MM camera, 500 of 6600 frames stacked Runner-up of Our Moon in Astronomy Photographer of the Year 2017