The International Extreme Ultraviolet Hitchhiker Payload (IEH-1) is the first of five planned flights to investigate the uncertainty of, and long term variation in, the magnitude of the absolute solar extreme ultraviolet (EUV) flux and to study the EUV emissions of the Jupiter Io plasma torus system. The IEH-1 Italian Space Agency partners will study the EUV emission of hot stellar objects. These observations are accomplished by the Solar Extreme Ultraviolet Hitchhihker (SEH) and Ultraviolet Spectrograph Telescope for Astronomical Research (UVSTAR). Both of these experiments are sponsored by NASA HQ Code SLC.

The IEH-1 is scheduled to launch aboard Endeavor this July 20th, 1995. The astronauts for STS-69 are: Dave Walker, Ken Cockrell, Jim Voss, Jim Newman and Michael Gernhardt. The crew will support IEH-1 activities by activating the payload and performing attitude maneuvers in support of UVSTAR, SEH and GLO-3 observations. While most of the payload activites will be controlled via the Goddard Control Center, the crew will be interfacing with the CONCAP IV-03 experiment via the PGSC laptop computer, i.e. sending commands and relaying telemetry to the GSFC control center. To learn more about the crew and other aspects of the STS-69 mission, click here.