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Euclid preparation. XVIII. The NISP photometric system

Schirmer, M. and Jahnke, K. and Seidel, G. and Aussel, H. and Bodendorf, C. and Grupp, F. and Hormuth, F. and Wachter, S. and Appleton, P. N. and Barbier, R. and Brinchmann, J. and Carrasco, J. M. and Castander, F. J. and Coupon, J. and De Paolis, F. and Franco, A. and Ganga, K. and Hudelot, P. and Jullo, E. and Lançon, A. and Nucita, A. A. and Paltani, S. and Smadja, G. and Strafella, F. and Venancio, L. M. G. and Weiler, M. and Amara, A. and Auphan, T. and Auricchio, N. and Balestra, A. and Bender, R. and Bonino, D. and Branchini, E. and Brescia, M. and Capobianco, V. and Carbone, C. and Carretero, J. and Casas, R. and Castellano, M. and Cavuoti, S. and Cimatti, A. and Cledassou, R. and Congedo, G. and Conselice, C. J. and Conversi, L. and Copin, Y. and Corcione, L. and Costille, A. and Courbin, F. and Da Silva, A. and Degaudenzi, H. and Douspis, M. and Dubath, F. and Dupac, X. and Dusini, S. and Ealet, A. and Farrens, S. and Ferriol, S. and Fosalba, P. and Frailis, M. and Franceschi, E. and Franzetti, P. and Fumana, M. and Garilli, B. and Gillard, W. and Gillis, B. and Giocoli, C. and Grazian, A. and Guzzo, L. and Haugan, S. V. H. and Hoekstra, H. and Holmes, W. and Hornstrup, A. and Kümmel, M. and Kermiche, S. and Kiessling, A. and Kilbinger, M. and Kitching, T. and Kohley, R. and Kunz, M. and Kurki-Suonio, H. and Laureijs, R. and Ligori, S. and Lilje, P. B. and Lloro, I. and Maciaszek, T. and Maiorano, E. and Mansutti, O. and Marggraf, O. and Markovic, K. and Marulli, F. and Massey, R. and Maurogordato, S. and Mellier, Y. and Meneghetti, M. and Merlin, E. and Meylan, G. and Moresco, M. and Moscardini, L. and Munari, E. and Nakajima, R. and Nichol, R. C. and Niemi, S. M. and Padilla, C. and Pasian, F. and Pedersen, K. and Percival, W. J. and Pettorino, V. and Pires, S. and Poncet, M. and Popa, L. and Pozzetti, L. and Prieto, E. and Raison, F. and Rhodes, J. and Rix, H.-W. and Roncarelli, M. and Rossetti, E. and Saglia, R. and Sartoris, B. and Scaramella, R. and Schneider, P. and Secroun, A. and Serrano, S. and Sirignano, C. and Sirri, G. and Stanco, L. and Tallada-Crespí, P. and Taylor, A. N. and Teplitz, H. I. and Tereno, I. and Toledo-Moreo, R. and Torradeflot, F. and Trifoglio, M. and Valentijn, E. A. and Valenziano, L. and Wang, Y. and Weller, J. and Zamorani, G. and Zoubian, J. and Andreon, S. and Bardelli, S. and Boucaud, A. and Camera, S. and Farinelli, R. and Graciá-Carpio, J. and Maino, D. and Medinaceli, E. and Mei, S. and Morisset, N. and Polenta, G. and Renzi, A. and Romelli, E. and Tenti, M. and Vassallo, T. and Zacchei, A. and Zucca, E. and Baccigalupi, C. and Balaguera-Antolínez, A. and Biviano, A. and Blanchard, A. and Borgani, S. and Bozzo, E. and Burigana, C. and Cabanac, R. and Cappi, A. and Carvalho, C. S. and Casas, S. and Castignani, G. and Colodro-Conde, C. and Cooray, A. R. and Courtois, H. M. and Crocce, M. and Cuby, J.-G. and Davini, S. and de la Torre, S. and Di Ferdinando, D. and Escartin, J. A. and Farina, M. and Ferreira, P. G. and Finelli, F. and Fotopoulou, S. and Galeotta, S. and Garcia-Bellido, J. and Gaztanaga, E. and George, K. and Gozaliasl, G. and Hook, I. M. and Ilić, S. and Kansal, V. and Kashlinsky, A. and Keihanen, E. and Kirkpatrick, C. C. and Lindholm, V. and Mainetti, G. and Maoli, R. and Martinelli, M. and Martinet, N. and Maturi, M. and Mauri, N. and McCracken, H. J. and Metcalf, R. B. and Monaco, P. and Morgante, G. and Nightingale, J. and Patrizii, L. and Peel, A. and Popa, V. and Porciani, C. and Potter, D. and Reimberg, P. and Riccio, G. and Sánchez, A. G. and Sapone, D. and Scottez, V. and Sefusatti, E. and Teyssier, R. and Tutusaus, I. and Valieri, C. and Valiviita, J. and Viel, M. and Hildebrandt, H. (2022) Euclid preparation. XVIII. The NISP photometric system. Astronomy and Astrophysics, 662 . Art. No. A92. ISSN 0004-6361. doi:10.1051/0004-6361/202142897.

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Euclid will be the first space mission to survey most of the extragalactic sky in the 0.95–2.02 µm range, to a 5 σ point-source median depth of 24.4 AB mag. This unique photometric dataset will find wide use beyond Euclid’s core science. In this paper, we present accurate computations of the Euclid Y_E, J_E, and H_E passbands used by the Near-Infrared Spectrometer and Photometer (NISP), and the associated photometric system. We pay particular attention to passband variations in the field of view, accounting for, among other factors, spatially variable filter transmission and variations in the angle of incidence on the filter substrate using optical ray tracing. The response curves’ cut-on and cut-off wavelengths – and their variation in the field of view – are determined with ~0.8 nm accuracy, essential for the photometric redshift accuracy required by Euclid. After computing the photometric zero points in the AB mag system, we present linear transformations from and to common ground-based near-infrared photometric systems, for normal stars, red and brown dwarfs, and galaxies separately. A Python tool to compute accurate magnitudes for arbitrary passbands and spectral energy distributions is provided. We discuss various factors, from space weathering to material outgassing, that may slowly alter Euclid’s spectral response. At the absolute flux scale, the Euclid in-flight calibration program connects the NISP photometric system to Hubble Space Telescope spectrophotometric white dwarf standards; at the relative flux scale, the chromatic evolution of the response is tracked at the milli-mag level. In this way, we establish an accurate photometric system that is fully controlled throughout Euclid’s lifetime.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Schirmer, M.0000-0003-2568-9994
Jahnke, K.0000-0003-3804-2137
Seidel, G.0000-0003-2907-353X
Aussel, H.0000-0002-1371-5705
Appleton, P. N.0000-0002-7607-8766
Brinchmann, J.0000-0003-4359-8797
Carrasco, J. M.0000-0002-3029-5853
Ganga, K.0000-0001-8159-8208
Jullo, E.0000-0002-9253-053X
Rhodes, J.0000-0002-4485-8549
Teplitz, H. I.0000-0002-7064-5424
Wang, Y.0000-0002-4749-2984
Additional Information:© Euclid Collaboration 2022. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Open Access funding provided by Max Planck Society. Received: 13 December 2021 Accepted: 31 March 2022. 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 Academy of Finland, the Agenzia Spaziale Italiana, the Belgian Science Policy, the Canadian Euclid Consortium, the French Centre National d’Etudes Spatiales, the Deutsches Zentrum für Luft- und Raumfahrt, the Danish Space Research Institute, the Fundação para a Ciência e a Tecnologia, the Ministerio de Economia y Competitividad, the National Aeronautics and Space Administration, the National Astronomical Observatory of Japan, the Netherlandse Onderzoekschool Voor Astronomie, the Norwegian Space Agency, 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 ( The first group of authors (up to and including M. Weiler) worked directly on this paper. The other authors made substantial, multi-year contributions totheEuclid project that enabled this paper in the first place. The authors at MPIA acknowledge funding by the German Space Agency DLR under grant numbers 50 OR 1202 and 50 QE 2003. The work by J.M. Carrasco and M. Weiler was (partially) funded by the Spanish MICIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe” by the European Union through grant RTI2018-095076-B-C21, and the Institute of Cosmos Sciences University of Barcelona (ICCUB, Unidad de Excelencia “Maria de Maeztu”) through grant CEX2019-000918-M. The authors thank Thomas Weber (OBJ; now Materion Balzers Optics) for the technical support with the transmission measurements of the NISP filter substrates, and the anonymous referee for their useful comments. The plots in this publication were prepared with TOPCAT (Taylor 2005) and Matplotlib (Hunter 2007).
Funding AgencyGrant Number
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50 OR 1202
Deutsches Zentrum für Luft- und Raumfahrt (DLR)50 QE 2003
Ministerio de Economía, Industria y Competitividad (MINECO)10.13039/501100011033
Ministerio de Economía, Industria y Competitividad (MINECO)RTI2018-095076-B-C21
Severo OchoaCEX2019-000918-M
European Space Agency (ESA)UNSPECIFIED
Academy of FinlandUNSPECIFIED
Agenzia Spaziale Italiana (ASI)UNSPECIFIED
Belgian Federal Science Policy Office (BELSPO)UNSPECIFIED
Canadian Euclid ConsortiumUNSPECIFIED
Centre National d'Études Spatiales (CNES)UNSPECIFIED
Danish Space Research InstituteUNSPECIFIED
Fundação para a Ciência e a Tecnologia (FCT)UNSPECIFIED
National Astronomical Observatory of JapanUNSPECIFIED
Nederlandse Onderzoekschool voor de Astronomie (NOVA)UNSPECIFIED
Norwegian Space AgencyUNSPECIFIED
Romanian Space AgencyUNSPECIFIED
Swiss Space Office (SSO)UNSPECIFIED
United Kingdom Space Agency (UKSA)UNSPECIFIED
Max Planck SocietyUNSPECIFIED
Subject Keywords:instrumentation: photometers / space vehicles: instruments
Record Number:CaltechAUTHORS:20220721-8585000
Persistent URL:
Official Citation:Euclid preparation - XVIII. The NISP photometric system Euclid Collaboration, M. Schirmer, K. Jahnke, G. Seidel, H. Aussel, C. Bodendorf, F. Grupp, F. Hormuth, S. Wachter, P. N. Appleton, R. Barbier, J. Brinchmann, J. M. Carrasco, F. J. Castander, J. Coupon, F. De Paolis, A. Franco, K. Ganga, P. Hudelot, E. Jullo, A. Lançon, A. A. Nucita, S. Paltani, G. Smadja, F. Strafella, L. M. G. Venancio, M. Weiler, A. Amara, T. Auphan, N. Auricchio, A. Balestra, R. Bender, D. Bonino, E. Branchini, M. Brescia, V. Capobianco, C. Carbone, J. Carretero, R. Casas, M. Castellano, S. Cavuoti, A. Cimatti, R. Cledassou, G. Congedo, C. J. Conselice, L. Conversi, Y. Copin, L. Corcione, A. Costille, F. Courbin, A. Da Silva, H. Degaudenzi, M. Douspis, F. Dubath, X. Dupac, S. Dusini, A. Ealet, S. Farrens, S. Ferriol, P. Fosalba, M. Frailis, E. Franceschi, P. Franzetti, M. Fumana, B. Garilli, W. Gillard, B. Gillis, C. Giocoli, A. Grazian, L. Guzzo, S. V. H. Haugan, H. Hoekstra, W. Holmes, A. Hornstrup, M. Kümmel, S. Kermiche, A. Kiessling, M. Kilbinger, T. Kitching, R. Kohley, M. Kunz, H. Kurki-Suonio, R. Laureijs, S. Ligori, P. B. Lilje, I. Lloro, T. Maciaszek, E. Maiorano, O. Mansutti, O. Marggraf, K. Markovic, F. Marulli, R. Massey, S. Maurogordato, Y. Mellier, M. Meneghetti, E. Merlin, G. Meylan, M. Moresco, L. Moscardini, E. Munari, R. Nakajima, R. C. Nichol, S. M. Niemi, C. Padilla, F. Pasian, K. Pedersen, W. J. Percival, V. Pettorino, S. Pires, M. Poncet, L. Popa, L. Pozzetti, E. Prieto, F. Raison, J. Rhodes, H.-W. Rix, M. Roncarelli, E. Rossetti, R. Saglia, B. Sartoris, R. Scaramella, P. Schneider, A. Secroun, S. Serrano, C. Sirignano, G. Sirri, L. Stanco, P. Tallada-Crespí, A. N. Taylor, H. I. Teplitz, I. Tereno, R. Toledo-Moreo, F. Torradeflot, M. Trifoglio, E. A. Valentijn, L. Valenziano, Y. Wang, J. Weller, G. Zamorani, J. Zoubian, S. Andreon, S. Bardelli, A. Boucaud, S. Camera, R. Farinelli, J. Graciá-Carpio, D. Maino, E. Medinaceli, S. Mei, N. Morisset, G. Polenta, A. Renzi, E. Romelli, M. Tenti, T. Vassallo, A. Zacchei, E. Zucca, C. Baccigalupi, A. Balaguera-Antolínez, A. Biviano, A. Blanchard, S. Borgani, E. Bozzo, C. Burigana, R. Cabanac, A. Cappi, C. S. Carvalho, S. Casas, G. Castignani, C. Colodro-Conde, A. R. Cooray, H. M. Courtois, M. Crocce, J.-G. Cuby, S. Davini, S. de la Torre, D. Di Ferdinando, J. A. Escartin, M. Farina, P. G. Ferreira, F. Finelli, S. Fotopoulou, S. Galeotta, J. Garcia-Bellido, E. Gaztanaga, K. George, G. Gozaliasl, I. M. Hook, S. Ilić, V. Kansal, A. Kashlinsky, E. Keihanen, C. C. Kirkpatrick, V. Lindholm, G. Mainetti, R. Maoli, M. Martinelli, N. Martinet, M. Maturi, N. Mauri, H. J. McCracken, R. B. Metcalf, P. Monaco, G. Morgante, J. Nightingale, L. Patrizii, A. Peel, V. Popa, C. Porciani, D. Potter, P. Reimberg, G. Riccio, A. G. Sánchez, D. Sapone, V. Scottez, E. Sefusatti, R. Teyssier, I. Tutusaus, C. Valieri, J. Valiviita, M. Viel and H. Hildebrandt A&A, 662 (2022) A92 DOI:
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ID Code:115738
Deposited By: George Porter
Deposited On:26 Jul 2022 15:19
Last Modified:26 Jul 2022 15:19

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