Witness Sample, Primary Mirror, Hubble Space Telescope

Display Status:

This object is on display in the Space Race exhibition at the National Air and Space Museum in Washington, DC.

Collection Item Summary:

This is one of a dozen small mirrors placed in the aluminization tank when the flight mirror for the Hubble Space Telescope was aluminized. While the mirror remained in storage, periodically one of these witness samples was removed for testing the integrity of the reflective surface.

Sky & Telescope Magazine donated this object to the Smithsonian in 2013.