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

Euclid Collaboration; 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.; Battaglia, P.; Bonoli, C.; Corcione, L.; Hormuth, F.; Le Mignant, D.; Morgante, G.; Padilla, C.; Toledo-Moreo, R.; Valenziano, L.; Bender, R.; Castander, F. J.; Lilje, P. B.; Balestra, A.; Barriere, J.-J. C.; Berthe, M.; Boderndorf, C.; Bonnefoi, A.; Capobianco, V.; Casas, R.; Cho, H.; Ducret, F.; Gimenez, J.-L.; Holmes, W.; Hornstrup, A.; Jhabvala, M.; Jullo, E.; Kohley, R.; Kubik, B.; Laureijs, R.; Lloro, I.; Macabiau, C.; Mellier, Y.; Polenta, G.; Racca, G. D.; Renzi, A.; Schirmer, M.; Seidel, G.; Seiffert, M.; Sirri, G.; Smadja, G.; Stanco, L.; Wachter, S.; Aussel, H.; Auphan, T.; Granett, B. R.; Chary, R.; Copin, Y.; Hudelot, P.; Le Brun, V.; Torradeflot, F.; Appleton, P. N.; Casenove, P.; Chabaud, P.-Y.; Frailis, M.; Fumana, M.; Guzzo, L.; Mainetti, G.; Maino, D.; Moresco, M.; Percival, W. J.; Scaramella, R.; Scodeggio, M.; Stickley, N. R.; Vibert, D.; Wang, Y.; Zoubian, J.; Aghanim, N.; Altieri, B.; Amara, A.; Andreon, S.; Baccigalupi, C.; Baldi, M.; Bardelli, S.; Biviano, A.; Bonchi, A.; Branchini, E.; Brescia, M.; Brinchmann, J.; Camera, S.; Cañas-Herrera, G. et al.
Referencia bibliográfica

Astronomy and Astrophysics

Fecha de publicación:
3
2026
Número de autores
359
Número de autores del IAC
5
Número de citas
3
Número de citas referidas
0
Descripción
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.