E. Renotte,1 C. Bastian,1 A. Bernat,1 M. Bougoin,2 B. Carlomagnohttps://orcid.org/0000-0003-3062-5653,1 C. Flebus,1 A. Feutry,1 E. Gillain,1 P. Gloesener,1 A. Jago,3 D. Logut,4 F. Mallet,5 Y. Martin,1 M. Pfaffe,3 A. Radioti,1 J.-M. Schumacher,1 F. Wolfs1
1AMOS s. a. (Belgium) 2Mersen BOOSTEC S.A. (France) 3Airbus Defence and Space GmbH (Germany) 4Airbus Defence and Space SAS (France) 5Mersen BOOSTEC SAS (France)
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METimage is an advanced multispectral radiometer for weather and climate forecasting developed by Airbus Defence & Space under the auspices of the German Space Administration (DLR) for the EUMETSAT Polar System –Second Generation (EPS-SG). The instrument is equipped with a continuously rotating scan mirror with a 1.7s period followed by a static telescope. The scan mirror permits an extended Earth view of 108° per revolution and regular views to on-board calibration sources. A derotator assembly, which is half-speed synchronised with the scanner, is inserted in the optical beam after the telescope to compensate the image rotation in the focal plane. The derotator optical arrangement is a fivemirror concept that minimises the polarisation sensitivity. The derotator design is constrained by optical performance, mass and compactness, which led to the selection of a full silicon carbide (SiC) concept. This paper is presented as a continuation of the ICSO 2018 paper to describe the detailed design and early physical model results of the derotator optics.
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E. Renotte, C. Bastian, A. Bernat, M. Bougoin, B. Carlomagno, C. Flebus, A. Feutry, E. Gillain, P. Gloesener, A. Jago, D. Logut, F. Mallet, Y. Martin, M. Pfaffe, A. Radioti, J.-M. Schumacher, F. Wolfs, "Full-SiC derotator optics for METimage: detailed design and early model results," Proc. SPIE 11852, International Conference on Space Optics — ICSO 2020, 1185256 (11 June 2021); https://doi.org/10.1117/12.2599933