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Proceedings Paper

Final design of the grism cryogenic mount for the Euclid-NISP mission
Author(s): Christelle Rossin; Anne Costille; Amandine Caillat; Sandrine Pascal; Patrice Sanchez; Benjamin Foulon; Sebastien Vives; Lorenzo Zavattini; Andrea Moroni; Paolo Radaelli
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Paper Abstract

The grism mount design for the Euclid-NISP mission was studied to maintain optical performances and alignment at cryogenic temperature, and to survive to launch vibrations. An Invar mount with strong weight-relief bonded to the Silica grism through tangential blades has been designed. In spring 2015 we proceeded to thermal cycling and vibration tests to successfully qualify the Grism Engineering Model in the Euclid space environment. Thanks to detailed Finite Element analyses, we correlated simulations and tests. Now that phase C began, we are manufacturing the Engineering and Qualification Model and the four Flight Models. Thus, random coupled analyses of the grisms on the complete wheel assembly and impact of interface preloads on the grism behavior have also been studied.

Paper Details

Date Published: 22 July 2016
PDF: 12 pages
Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 991261 (22 July 2016); doi: 10.1117/12.2232293
Show Author Affiliations
Christelle Rossin, Lab. d'Astrophysique de Marseille, Aix Marseille Univ., CNRS (France)
Clermant Univ., Univ. Blaise Pascal, CNRS, Observatoire de Physique du Globe de Clermont-Ferrand (France)
Anne Costille, Lab. d'Astrophysique de Marseille, Aix Marseille Univ., CNRS (France)
Amandine Caillat, Lab. d'Astrophysique de Marseille, Aix Marseille Univ., CNRS (France)
Sandrine Pascal, Lab. d'Astrophysique de Marseille, Aix Marseille Univ., CNRS (France)
Patrice Sanchez, Lab. d'Astrophysique de Marseille, Aix Marseille Univ., CNRS (France)
Benjamin Foulon, Lab. d'Astrophysique de Marseille, Aix Marseille Univ., CNRS (France)
Sebastien Vives, Lab. d'Astrophysique de Marseille, Aix Marseille Univ., CNRS (France)
Lorenzo Zavattini, CGS S.p.A. Compagnia Generale per lo Spazio (Italy)
Andrea Moroni, CGS S.p.A. Compagnia Generale per lo Spazio (Italy)
Paolo Radaelli, CGS S.p.A. Compagnia Generale per lo Spazio (Italy)


Published in SPIE Proceedings Vol. 9912:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II
Ramón Navarro; James H. Burge, Editor(s)

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