S71-44666 (31 July-2 Aug. 1971) --- An oblique view of Schroeter's Valley and the crater Aristarchus, as photographed by the Fairchild metric camera in the Scientific Instrumentation Module (SIM) bay of the Apollo 15 Command and Service Module (CSM) in lunar orbit. This view is looking south. The large, bright-appearing crater to the left of the head of meandering Schroeter's Valley is Aristarchus, the center of which is located at 48 degrees west longitude and 214 degrees north latitude. The crater Aristarchus approximately 35 kilometers (about 21.75 statute miles) in diameter. The head of Schroeter's Valley, a sinuous rille in the Aristarchus Plateau in the Ocean of Storms, is called Cobra Head. Herodotus the crater just above and to the right of Cobra Head in upper center. The three-inch mapping camera was one of eight lunar orbital science experiments mounted in the SIM bay.