The telescope
SM2: Maintenance of the Magnetic Sensing System (MSS)
February 21, 1997 · ESA/Hubble · HST , Hubble Space Telescope , SM2
Astronaut Gregory J. Harbaugh (solid stripe on EMU) uses remote manipulator system (RMS) as a cherry-picker device to service HST. In cooperation with astronaut Joseph R. Tanner, nearby, the mission specialist was in the process of replacing the HST's Magnetic Sensing System (MSS) protective caps with new, permanent covers.
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