Understanding Gaia by Gabriella Bernardi & Alberto Vecchiato

Author:Gabriella Bernardi & Alberto Vecchiato
Language: eng
Format: epub
ISBN: 9783030114497
Publisher: Springer International Publishing

7.3 The Payload Module

Fastened over the service module, and protected like the latter by the thermal tent, there is the payload module. In space science parlance, the payload is that part of the vehicle (in this case, of the Gaia spacecraft) that does the actual measurements (Fig. 7.3).

Fig. 7.3The payload module is supported by a large SiC torus (see text) to which all of the mirrors and the focal plane instrumentations are attached. Light enters from two holes cut out of the thermal tent, and hits the primary mirrors M1 and M′1 first. A series of reflections brings it to the focal plane

(© ESA—C. Carreau)

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