A fully intact IPS (Instrument Pointing System) and PEA (Payload Electronics Assembly) possibly flown-used on a Shuttle OV Spacelab module during the 1980s, measuring 9 x 9 x 5.5, bearing a Dornier System tag on one side, reading: "IPS-PEA, Ser. No. 05, Typ Torquer EL 1 Electr., Nr 883-110120.00.0, Revision A1." In fine condition. From the collection of aerospace memorabilia specialist Ken Havekotte. Flown status presumed by Havekotte. Located in the Orbiter's payload bay area, this was a critical piece of the 3-axis gimbal system that provided precision pointing of a wide range of payloads. Some research to be accomplished on Spacelab missions required that instruments be pointed with very high accuracy and stability at stars, the sun, the Earth, or other targets of observation, which was made possible by the IPS.
Terms and abbreviations used in our descriptions.