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25 September 2017 EUCLID/NISP GRISM qualification model AIT/AIV campaign: optical, mechanical, thermal and vibration tests
A. Caillat, A. Costille, S. Pascal, C. Rossin, S. Vives, B. Foulon, P. Sanchez
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Proceedings Volume 10562, International Conference on Space Optics — ICSO 2016; 1056203 (2017) https://doi.org/10.1117/12.2296083
Event: International Conference on Space Optics — ICSO 2016, 2016, Biarritz, France
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.
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A. Caillat, A. Costille, S. Pascal, C. Rossin, S. Vives, B. Foulon, and P. Sanchez "EUCLID/NISP GRISM qualification model AIT/AIV campaign: optical, mechanical, thermal and vibration tests", Proc. SPIE 10562, International Conference on Space Optics — ICSO 2016, 1056203 (25 September 2017); https://doi.org/10.1117/12.2296083
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KEYWORDS
Optics manufacturing
Manufacturing
Optical filters
Astronomical imaging
Optical components
Monochromatic aberrations
Prisms
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