ESA's Euclid cosmology mission relies on the very sensitive and accurately calibrated spectroscopy channel of the Near-Infrared Spectrometer and Photometer (NISP). With three operational grisms in two wavelength intervals, NISP provides diffraction-limited slitless spectroscopy over a field of 0.57 deg2. A blue grism, BGE, covers the wavelength range 926- 1366 nm at a spectral resolution (ℛ) of 440- 900 for a 0.″5 diameter source with a dispersion of 1.24 nm px-1. Two red grisms, RGE, span 1206 to 1892 nm at ℛ = 550- 740 and a dispersion of 1.37 nm px-1. We describe the construction of the grisms as well as the ground testing of the flight model of the NISP instrument, where these properties were established.

Euclid preparation: XXVII. The NISP spectroscopy channel: Ground performance and calibration / Null, N., Gillard, W., Maciaszek, T., Prieto, E., Grupp, F., Costille, A., Jahnke, K., Clemens, J., Dusini, S., Carle, M., Sirignano, C., Medinaceli, E., Ligori, S., Franceschi, E., Trifoglio, M., Bon, W., Barbier, R., Ferriol, S., Secroun, A., Auricchio, N., et al.. - In: ASTRONOMY & ASTROPHYSICS. - ISSN 0004-6361. - 707:(2026), pp. A227.1-A227.23. [10.1051/0004-6361/202555859]

Euclid preparation: XXVII. The NISP spectroscopy channel: Ground performance and calibration

Maino, D.;Biviano, A.;Moscardini, L.;Romelli, E.;Sartoris, B.;Sefusatti, E.;Tavagnacco, D.;Borgani, S.;Gasparetto, T.;Gregorio, A.
Membro del Collaboration Group
;
Moretti, C.;
2026-01-01

Abstract

ESA's Euclid cosmology mission relies on the very sensitive and accurately calibrated spectroscopy channel of the Near-Infrared Spectrometer and Photometer (NISP). With three operational grisms in two wavelength intervals, NISP provides diffraction-limited slitless spectroscopy over a field of 0.57 deg2. A blue grism, BGE, covers the wavelength range 926- 1366 nm at a spectral resolution (ℛ) of 440- 900 for a 0.″5 diameter source with a dispersion of 1.24 nm px-1. Two red grisms, RGE, span 1206 to 1892 nm at ℛ = 550- 740 and a dispersion of 1.37 nm px-1. We describe the construction of the grisms as well as the ground testing of the flight model of the NISP instrument, where these properties were established.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/3135521
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