M1/M2 Distance Measurements
Date: 16 May 2008
Depicts: Flight model spacecraft
Location: Cleanroom at ESTEC, Noordwijk, The Netherlands
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The Herschel telescope during the precision M1 to M2 mirror separation measurements, with the spacecraft in horizontal position. The operator can be seen placing laser targets at the rear of the M2 (secondary mirror).
Last Update: 1 September 2019