TY - JOUR
T1 - Euclid preparation
T2 - LXXVII. The NISP spectroscopy channel, on ground performance and calibration
AU - Euclid Collaboration
AU - Collaboration, Euclid
AU - Maciaszek, T.
AU - Prieto, E.
AU - Grupp, F.
AU - Costille, A.
AU - Jahnke, K.
AU - Clemens, J.
AU - Dusini, S.
AU - Carle, M.
AU - Sirignano, C.
AU - Medinaceli, E.
AU - Ligori, S.
AU - Franceschi, E.
AU - Trifoglio, M.
AU - Bon, W.
AU - Barbier, R.
AU - Ferriol, S.
AU - Secroun, A.
AU - Auricchio, N.
AU - Battaglia, P.
AU - Bonoli, C.
AU - Corcione, L.
AU - Hormuth, F.
AU - Mignant, D. Le
AU - Morgante, G.
AU - Padilla, C.
AU - Toledo-Moreo, R.
AU - Valenziano, L.
AU - Bender, R.
AU - Castander, F. J.
AU - Lilje, P. B.
AU - Balestra, A.
AU - Barriere, J. -J. C.
AU - Berthe, M.
AU - Boderndorf, C.
AU - Bonnefoi, A.
AU - Capobianco, V.
AU - Casas, R.
AU - Cho, H.
AU - Ducret, F.
AU - Gimenez, J. -L.
AU - Percival, W. J.
AU - Amara, A.
AU - Casas, S.
AU - Markovic, K.
AU - Nichol, R. C.
AU - Schewtschenko, J. A.
AU - Gaztanaga, E.
AU - Nadathur, S.
AU - Naidoo, K.
N1 - 18 pages 15 figures with additional 8 pages of annexes. Submitted to A&A
PY - 2026/3/17
Y1 - 2026/3/17
N2 - 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.
AB - 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.
KW - astro-ph.IM
KW - instrumentation: spectrographs
KW - Space vehicles: instruments
KW - techniques: imaging spectroscopy
KW - techniques: spectroscopic
KW - cosmology: observations
U2 - 10.1051/0004-6361/202555859
DO - 10.1051/0004-6361/202555859
M3 - Article
SN - 0004-6361
VL - 707
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
M1 - A227
ER -