Final design of the grism cryogenic mount for the Euclid-NISP mission

Christelle Rossin; Anne Costille; Amandine Caillat; Sandrine Pascal; Patrice Sanchez; Benjamin Foulon; Sebastien Vives; Lorenzo Zavattini; Andrea Moroni; Paolo Radaelli

doi:10.1117/12.2232293

22 July 2016 Final design of the grism cryogenic mount for the Euclid-NISP mission

Christelle Rossin, Anne Costille, Amandine Caillat, Sandrine Pascal, Patrice Sanchez, Benjamin Foulon, Sebastien Vives, Lorenzo Zavattini, Andrea Moroni, Paolo Radaelli

Author Affiliations +

Proceedings Volume 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II; 991261 (2016) https://doi.org/10.1117/12.2232293
Event: SPIE Astronomical Telescopes + Instrumentation, 2016, Edinburgh, United Kingdom

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.

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Christelle Rossin, Anne Costille, Amandine Caillat, Sandrine Pascal, Patrice Sanchez, Benjamin Foulon, Sebastien Vives, Lorenzo Zavattini, Andrea Moroni, and Paolo Radaelli "Final design of the grism cryogenic mount for the Euclid-NISP mission", Proc. SPIE 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II, 991261 (22 July 2016); https://doi.org/10.1117/12.2232293

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