The Faint Object Spectrograph was one of the original Space Telescope instruments when it was deployed on April 25th 1990. It was operational until the Second Servicing Mission in February 1997 when it was removed from the observatory and brought back to earth. It now resides at the Smithsonian Museum. This is what it looks like now after surviving nearly seven years in orbit. More...

FOS Discoveries

FOS Hardware

Including: Pictures of the detectors before and after seven years in orbit, technical details and documents from the design and pre-launch phases.

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