Manufacturing, testing and alignment of Sentinel-2 MSI telescope mirrors

Pierre Gloesener; F. Wolfs; F. Lemagne; C. Flebus

doi:10.1117/12.2309164

20 November 2017 Manufacturing, testing and alignment of Sentinel-2 MSI telescope mirrors

Pierre Gloesener, F. Wolfs, F. Lemagne, C. Flebus

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Proceedings Volume 10564, International Conference on Space Optics — ICSO 2012; 105640X (2017) https://doi.org/10.1117/12.2309164
Event: International Conference on Space Optics 2012, 2012, Ajaccio, Corsica, France

Abstract

The ESA Sentinel-2 mission developed by EADS Astrium will be devoted to Earth high resolution spectral imagery for the purpose of a global environmental monitoring. As a subcontractor of EADS Astrium, AMOS was responsible for the manufacturing of the instrument telescope mirrors and for the validation of the telescope alignment procedure. This paper details the mirror manufacturing sequences from mirror CVDSiC cladding to surface figuring and coating, outlining the metrology steps and their corresponding accuracy budget. The telescope alignment process is described in connection with the tooling and techniques that helped achieve the required optical performance of less than 90 nm RMS wavefront error within the telescope field of view.

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Pierre Gloesener, F. Wolfs, F. Lemagne, and C. Flebus "Manufacturing, testing and alignment of Sentinel-2 MSI telescope mirrors", Proc. SPIE 10564, International Conference on Space Optics — ICSO 2012, 105640X (20 November 2017); https://doi.org/10.1117/12.2309164

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