EUCLID's near infrared spectro-photometer ready for flight: review of final performances

Date Issued
2022
Author(s)
Medinaceli, E.
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Dusini, S.
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Sirignano, C.
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Borsato, E.
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Stanco, L.
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Renzi, A.
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Troja, A.
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Gabarra, L.
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Sirri, G.
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Patrizii, L.
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Tenti, M.
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Di Ferdinando, D.
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Valieri, C.
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Mauri, N.
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Giacomini, F.
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Le Mignant, D.
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Prieto, E.
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Carle, M.
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Ducret, F.
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Gillard, W.
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Secroun, A.
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Maciaszek, T.
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Ferriol, S.
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Barbier, R.
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Grupp, F.
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Holmes, W.
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Pniel, M.
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Waczynski, A.
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Prado, S.
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Seiffert, M.
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Jhabvala, M.
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Laureijs, R.
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Racca, G.
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Salvignol, J. C.
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Boenke, T.
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Strada, P.
DOI
Abstract
ESA's mission Euclid while undertaking its final integration stage is fully qualified. Euclid will perform an extra galactic survey (02, 0.3 arcsec/px, 18 μm pixel pitch; using data from the latest test campaigns done with the flight configuration hardware - complete optical system (Korsh anastigmat telescope), detectors array (0.56 deg2 firld of view) and readout systems (16 Digital Control Units and Sidecar ASICs). Also, we show the outstanding Spectrometric (using a Blue and two Red Grisms) and Photometric (using YE 0.92-1.15μm, JE 1.15-1.37μm, and HE 1.37-2.0 μm filters) performances of the NISP detector derived from the end-to-end payload module test campaign at FOCAL 5 - CSL; among them the Photometric Point Spread Function (PSF) determination, and the Spectroscopic dispersion verification. Also the performances of the onboard processing are presented. Then, we describe the solution of a major issue found during this final test phase that put NISP in the critical path. We will describe how the problem was eventually understood and solved thanks to an intensive coordinated effort of an independent review team (tiger team lead by ESA) and a team of NISP experts from the Euclid Consortium. An extended PLM level campaign in ambient in Liege and a dedicated test campaign conducted in Marseille on the NISP EQM model, with both industrial and managerial support, finally confirmed the correctness of the diagnosis of the problem. Finally, the Euclid's survey is presented (14000 deg2 wide survey, and ∼40 deg2 deep-survey) as well as the global statistics for a mission lifetime of 6 years (∼1.5 billion Galaxy's shapes, and ∼50 million Galaxy's spectra).
Coverage
Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave
All editors
Coyle, Laura E.; Matsuura, Shuji; Perrin, Marshall D.
Series
Volume
12180
Start page
121801L
Conferenece
Space Telescopes and Instrumentation 2022: Optical, Infrared, and Millimeter Wave
Conferenece place
Montréal, Québec, Canada
Conferenece date
17-23 July, 2022
Uri
Url
Issn Identifier
0277-786X
Ads BibCode
2022SPIE12180E..1LM
Rights
open.access
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