A1 Refereed original research article in a scientific journal
Euclid preparation: LXXVII. The NISP spectroscopy channel: Ground performance and calibration
Authors: 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.; Canas-Herrera, G.; Carbone, C.; Carretero, J.; Casas, S.; Castellano, M.; Castignani, G.; Cavuoti, S.; Chambers, K. C.; Cimatti, A.; Colodro-Conde, C.; Congedo, G.; Conselice, C. J.; Conversi, L.; Courbin, F.; Courtois, H. M.; Cuby, J. -G.; Da Silva, A.; da Silva, R.; Degaudenzi, H.; De Lucia, G.; Di Giorgio, A. M.; Dole, H.; Douspis, M.; Dubath, F.; Dupac, X.; Escoffier, S.; Fabricius, M.; Farina, M.; Farinelli, R.; Fosalba, P.; Fotopoulou, S.; Fourmanoit, N.; Franzetti, P.; Galeotta, S.; George, K.; Gillis, B.; Giocoli, C.; Gomez-Alvarez, P.; Gracia-Carpio, J.; Grazian, A.; Haugan, S. V. H.; Hoar, J.; Hoekstra, H.; Hook, I. M.; Keihanen, E.; Kermiche, S.; Kiessling, A.; Kummel, M.; Kunz, M.; Kurki-Suonio, H.; Le Boulc'h, Q.; Le Brun, A. M. C.; Liebing, P.; Lindholm, V.; Maiorano, E.; Mansutti, O.; Marcin, S.; Marggraf, O.; Markovic, K.; Martinelli, M.; Martinet, N.; Marulli, F.; Massey, R.; Maurogordato, S.; McCracken, H. J.; Mei, S.; Melchior, M.; Meneghetti, M.; Merlin, E.; Meylan, G.; Mora, A.; Moscardini, L.; Nakajima, R.; Neissner, C.; Nichol, R. C.; Niemi, S. -M.; Nightingale, J. W.; Paltani, S.; Pasian, F.; Pedersen, K.; Pettorino, V.; Pires, S.; Poncet, M.; Popa, L. A.; Pozzetti, L.; Raison, F.; Rebolo, R.; Rhodes, J.; Riccio, G.; Romelli, E.; Roncarelli, M.; Rossetti, E.; Saglia, R.; Sakr, Z.; Sanchez, A. G.; Sapone, D.; Sartoris, B.; Schewtschenko, J. A.; Schneider, P.; Schrabback, T.; Sefusatti, E.; Simon, P.; Steinwagner, J.; Tallada-Crespi, P.; Tavagnacco, D.; Taylor, A. N.; Teplitz, H. I.; Tereno, I.; Toft, S.; Tutusaus, I.; Valiviita, J.; Vassallo, T.; Kleijn, G. Verdoes; Veropalumbo, A.; Weller, J.; Zacchei, A.; Zamorani, G.; Zerbi, F. M.; Zinchenko, I. A.; Zucca, E.; Allevato, V.; Ballardini, M.; Bolzonella, M.; Bozzo, E.; Burigana, C.; Cabanac, R.; Cappi, A.; Di Ferdinando, D.; Vigo, J. A. Escartin; Gabarra, L.; Hartley, W. G.; Martin-Fleitas, J.; Matthew, S.; Mauri, N.; Metcalf, R. B.; Pezzotta, A.; Pontinen, M.; Porciani, C.; Risso, I.; Scottez, V.; Sereno, M.; Tenti, M.; Viel, M.; Wiesmann, M.; Akrami, Y.; Andika, I. T.; Anselmi, S.; Archidiacono, M.; Atrio-Barandela, F.; Bertacca, D.; Bethermin, M.; Blanchard, A.; Blot, L.; Borgani, S.; Brown, M. L.; Bruton, S.; Calabro, A.; Camacho Quevedo, B.; Caro, F.; Carvalho, C. S.; Castro, T.; Charles, Y.; Cogato, F.; Conseil, S.; Cooray, A. R.; Cucciati, O.; Davini, S.; De Paolis, F.; Desprez, G.; Diaz-Sanchez, A.; Diaz, J. J.; Di Domizio, S.; Diego, J. M.; Dimauro, P.; Duc, P. -A.; Enia, A.; Fang, Y.; Ferguson, A. M. N.; Ferrari, A. G.; Finoguenov, A.; Franco, A.; Ganga, K.; Garcia-Bellido, J.; Gasparetto, T.; Gautard, V.; Gaztanaga, E.; Giacomini, F.; Gianotti, F.; Gozaliasl, G.; Gregorio, A.; Guidi, M.; Gutierrez, C. M.; Hall, A.; Hemmati, S.; Hernandez-Monteagudo, C.; Hildebrandt, H.; Hjorth, J.; Kajava, J. J. E.; Kang, Y.; Kansal, V.; Karagiannis, D.; Kiiveri, K.; Kirkpatrick, C. C.; Kruk, S.; Le Graet, J.; Legrand, L.; Lembo, M.; Lepori, F.; Leroy, G.; Lesci, G. F.; Lesgourgues, J.; Leuzzi, L.; Liaudat, T. I.; Liu, S. J.; Loureiro, A.; Macias-Perez, J.; Maggio, G.; Magliocchetti, M.; Mancini, C.; Mannucci, F.; Maoli, R.; Martins, C. J. A. P.; Maurin, L.; McPartland, C. J. R.; Miluzio, M.; Monaco, P.; Montoro, A.; Moretti, C.; Nadathur, S.; Naidoo, K.; Navarro-Alsina, A.; Passalacqua, F.; Paterson, K.; Patrizii, L.; Pisani, A.; Potter, D.; Quai, S.; Radovich, M.; Rocci, P. -F.; Sacquegna, S.; Sahlen, M.; Sanders, D. B.; Sarpa, E.; Schneider, A.; Sciotti, D.; Sellentin, E.; Smith, L. C.; Tanidis, K.; Tao, C.; Testera, G.; Teyssier, R.; Tosi, S.; Troja, A.; Tucci, M.; Valieri, C.; Venhola, A.; Vergani, D.; Verza, G.; Walton, N. A.; Zalesky, L.; Euclid Collaboration
Publisher: EDP Sciences
Publication year: 2026
Journal: Astronomy and Astrophysics
Article number: A227
Volume: 707
ISSN: 0004-6361
eISSN: 1432-0746
DOI: https://doi.org/10.1051/0004-6361/202555859
Publication's open availability at the time of reporting: Open Access
Publication channel's open availability : Open Access publication channel
Web address : https://doi.org/10.1051/0004-6361/202555859
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/523279629
Self-archived copy's licence: CC BY
Self-archived copy's version: Publisher`s PDF
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.
Key words: instrumentation: spectrographs / space vehicles: instruments / techniques: imaging spectroscopy / techniques: spectroscopic / cosmology: observations
Publisher note: The article number in this series contained a typo. The Roman numeral in the subtitle was corrected on 25 March 2026.
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Funding information in the publication:
The Euclid Consortium acknowledges the European Space Agency and a number of agencies and institutes that have supported the development of Euclid, in particular the Agenzia Spaziale Italiana, the Austrian Forschungsforderungsgesellschaft funded through BMK, the Belgian Science Policy, the Canadian Euclid Consortium, the Deutsches Zentrum fur Luft- und Raumfahrt, the DTU Space and the Niels Bohr Institute in Denmark, the French Centre National d'Etudes Spatiales, the Fundacao para a Ciencia e a Tecnologia, the Hungarian Academy of Sciences, the Ministerio de Ciencia, Innovacion y Universidades, the National Aeronautics and Space Administration, the National Astronomical Observatory of Japan, the Netherlandse Onderzoekschool Voor Astronomie, the Norwegian Space Agency, the Research Council of Finland, the Romanian Space Agency, the State Secretariat for Education, Research, and Innovation (SERI) at the Swiss Space Office (SSO), and the United Kingdom Space Agency. A complete and detailed list is available on the Euclid web site (www.euclid-ec.org).
