Hipparcos astrometry satellite beam combiner mirror

Flight spare unit, made by REOSC (France).

This mirror is a flight spare from the Hipparcos satellite that was used to map over 1 million stars during the early 1990s. To speed up the process, engineers split the mirror so that more parts of the sky could observed at the same time.

Object Details

ID: ZBA1753
Collection: Astronomical and navigational instruments
Type: combiner, beam
Display location: Not on display
Date made: 1986
People: Perryman, Michael
Credit: National Maritime Museum Greenwich, London. On Loan from Michael Perryman.
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