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Proceedings Paper • Open Access

EUCLID/NISP GRISM qualification model AIT/AIV campaign: optical, mechanical, thermal and vibration tests
Author(s): A. Caillat; A. Costille; S. Pascal; C. Rossin; S. Vives; B. Foulon; P. Sanchez

Paper Abstract

Dark matter and dark energy mysteries will be explored by the Euclid ESA M-class space mission which will be launched in 2020. Millions of galaxies will be surveyed through visible imagery and NIR imagery and spectroscopy in order to map in three dimensions the Universe at different evolution stages over the past 10 billion years. The massive NIR spectroscopic survey will be done efficiently by the NISP instrument thanks to the use of grisms (for “Grating pRISMs”) developed under the responsibility of the LAM. In this paper, we present the verification philosophy applied to test and validate each grism before the delivery to the project. The test sequence covers a large set of verifications: optical tests to validate efficiency and WFE of the component, mechanical tests to validate the robustness to vibration, thermal tests to validate its behavior in cryogenic environment and a complete metrology of the assembled component. We show the test results obtained on the first grism Engineering and Qualification Model (EQM) which will be delivered to the NISP project in fall 2016.

Paper Details

Date Published: 25 September 2017
PDF: 10 pages
Proc. SPIE 10562, International Conference on Space Optics — ICSO 2016, 1056203 (25 September 2017); doi: 10.1117/12.2296083
Show Author Affiliations
A. Caillat, Aix Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
A. Costille, Aix Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
S. Pascal, Aix Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
C. Rossin, Aix Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
S. Vives, Aix Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
B. Foulon, Aix Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)
P. Sanchez, Aix Marseille Univ., CNRS, Lab. d'Astrophysique de Marseille (France)


Published in SPIE Proceedings Vol. 10562:
International Conference on Space Optics — ICSO 2016
Bruno Cugny; Nikos Karafolas; Zoran Sodnik, Editor(s)

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