An astronaut on the end of the space shuttle's robotic CANADARM above the shuttle's cargo bay. He is holding Hubble's Faint Object Spectrograph, which looks like a large black box. Hubble is in the background.

Hubble SM2 Faint Object Spectrograph

Steven L. Smith, STS-82 mission specialist, on the Remote Manipulator System (RMS) arm with the Faint Object Spectrograph (FOS) after removal from Hubble Space Telescope during the second servicing mission in February 1997.

Credits: NASA