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Proceedings Paper

NIRSpec: near-infrared spectrograph for the JWST
Author(s): Winfried Posselt; Wolfgang Holota; Ernst Kulinyak; Guenther Kling; Thomas Kutscheid; Olivier Le Fevre; Eric Prieto; Pierre Ferruit
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Paper Abstract

The James Webb Space Telescope (JWST) is a passively cooled, 6.5m aperture class telescope, optimized for diffraction-limited performance in the near-infrared wavelength region (1 - 5 μm). JWST will be capable of high-resolution imaging and spectroscopy and will carry a scientific payload consisting of three scientific instruments. One of the instruments - NIRSpec - is a near-infrared, multi-object, dispersive spectrograph, which will be provided by ESA. EADS Astrium and its subcontractors have been involved in all ESA instrument studies for JWST. The actual NIRSpec design has evolved during three years of studying of different spectrometer design and performance options. Basic feature of the current design is the all ceramic material concept for the instrument structure and mirror optics; both were successfully tested on component level. This paper presents our NIRSpec design concept and its predicted performance.

Paper Details

Date Published: 12 October 2004
PDF: 10 pages
Proc. SPIE 5487, Optical, Infrared, and Millimeter Space Telescopes, (12 October 2004); doi: 10.1117/12.555659
Show Author Affiliations
Winfried Posselt, EADS-Astrium, Ltd. (Germany)
Wolfgang Holota, EADS-Astrium, Ltd. (Germany)
Ernst Kulinyak, EADS-Astrium, Ltd. (Germany)
Guenther Kling, EADS-Astrium, Ltd. (Germany)
Thomas Kutscheid, EADS-Astrium, Ltd. (Germany)
Olivier Le Fevre, Lab. d'Astrophysique de Marseille (France)
Eric Prieto, Lab. d'Astrophysique de Marseille (France)
Pierre Ferruit, Observatoire de Lyon (France)

Published in SPIE Proceedings Vol. 5487:
Optical, Infrared, and Millimeter Space Telescopes
John C. Mather, Editor(s)

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