STS-56 Discovery, OV-103, payload bay (PLB) with ATLAS-2 pallet & SPARTAN-201

STS056-151-257 (8-17 April 1993) --- The Atlas-2 payloads are featured in this cargo bay scene aboard Discovery, backdropped against an oblique view of the Kamchatka Peninsula. The Shuttle was in an atmospheric monitoring attitude. The supportive Igloo structure is partially visible in the foreground. The canisters for the Shuttle Solar Backscatter Ultraviolet (SSBU) experiment are just out of frame on the starboard side of the bay. Between the ATLAS-2 experiment pallet and the aft firewall of the payload bay is the SPARTAN-201 satellite, which was later released from the cargo bay into a free-flying period and returned to its stowage area for return to Earth. Also visible in frame are the MAS Antenna, Active Cavity Radiometer Irradiance Monitor, SOLCON, SOLSPEC and SUSIM.