STS-39 crew activities

STS039-20-006 (28 April-6 May 1991) --- Astronaut Michael L. Coats, STS-39 mission commander, works controls of a robotic arm on the aft flight deck of the Earth-orbiting space shuttle Discovery. Out the overhead window, the SPAS-II hovers on the end of the remote manipulator system (RMS, out of frame). Inside the window, just above Coats' head is the Crewman Optical Alignment Sight (COAS), an optical device that aids in navigation. Photo credit: NASA