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

W. Gillard; T. Maciaszek; E. Prieto; F. Grupp; A. Costille; K. Jahnke; J. Clemens; S. Dusini; M. Carle; C. Sirignano; E. Medinaceli; S. Ligori; E. Franceschi; M. Trifoglio; W. Bon; R. Barbier; S. Ferriol; A. Secroun; N. Auricchio; P. Battaglia; C. Bonoli; L. Corcione; F. Hormuth; D. Le Mignant; G. Morgante; C. Padilla; R. Toledo-Moreo; L. Valenziano; R. Bender; D.Q. Lamb; P.B. Lilje; A. Balestra; C. J.-J. Barriere; M. Berthe; C. Boderndorf; A. Bonnefoi; V. Capobianco; R. Casas; H. Cho; F. Ducret; J.-L Gimenez; W. Holmes; A. Hornstrup; M. Jhabvala; E. Jullo; R. Kohley; B. Kubik; R. Laureijs; I. Lloro; C. Macabiau; Y. Mellier; G. Polenta; G.D. Racca; A. Renzi; M. Schirmer; G. Seidel; M. Seiffert; G. Sirri; G. Smadja; L. Stanco; S. Wachter; H. Aussel; T. Auphan; B.R. Granett; R. Chary; Y. Copin; P. Hudelot; V. Le Brun; F. Torradeflot; Pn Appleton; P. Casenove; P.-Y. Chabaud; M. Frailis; M. Fumana; L. Guzzo; G. Mainetti; D. Maino; M. Moresco; W.J. Percival; R. Scaramella; M. Scodeggio; N.R. Stickley; D. Vibert; Y. N. Wang; J. Zoubian; N. Aghanim; B. Altieri; A. Amara; S. Andreon; C. Baccigalupi; M. Baldi; S. Bardelli; A. Biviano; A. Bonchi; E. Branchini; M. Brescia; J. Brinchmann; S. Camera; G. Cañas-Herrera; C. Carbone

doi:10.1051/0004-6361/202555859/pdf

October 14, 2025

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

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Key Points

The aim is to evaluate the ground performance and calibration of the NISP spectroscopy channel for the Euclid mission.
Described construction and operational details of three grisms
Ground testing of the NISP instrument's flight model
Evaluation of spectral resolution and dispersion characteristics
Established diffraction-limited slitless spectroscopy over a 0.57 deg^2 field
Measured grism performance with spectral resolutions ranging from 440 to 900
Successfully covered wavelengths from 926 to 1892 nm

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Implication

Ground performance and calibration of the NISP spectroscopy channel shows high sensitivity and resolution in varying wavelengths, essential for cosmology.

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Gillard et al. (2025) studied this question.

synapsesocial.com/papers/696c77f1eb60fb80d13962ba https://doi.org/10.1051/0004-6361/202555859/pdf

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

Key Points

No abstract yet

Implication

Discussion

Cite This Study

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

Key Points

No abstract yet

Implication

Discussion

Cite This Study

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