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Proceedings Paper

The JWST/NIRSpec instrument performance simulator
Author(s): L. Piqueras; P.-J. Legay; E. Legros; P. Ferruit; A. Pecontal; X. Gnata; P. Mosner
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Paper Abstract

The future James Webb space telescope (JWST), developed jointly by the American, European and Canadian space agencies (NASA, ESA and CSA), is scheduled for launch in 2013. Among its instrument suite, the spectrograph NIRSpec will provide astronomers with multi-object, integral-field and classical slit spectrographic capabilities in the near-infrared (0.6-5.0 μm). NIRSpec is being built by EADS Astrium for ESA and it was quickly realized that given the complexity of the instrument, it was necessary to develop dedicated software for the modeling of its performances. In this context, the Centre de Recherche Astrophysique de Lyon (CRAL) is responsible of the development of the so-called NIRSpec instrument performance simulator (IPS) that will serve as a basis for early performance verification purposes; provide inputs and support for the verification and calibration campaigns, as well as for the development of the instrument calibration, target acquisition and data reduction procedures. In this paper, we present the IPS software itself, emphasizing its capability to generate simulated NIRSpec detector exposures for the various modes of the instrument (multi-object, integral field unit, fixed slits) and for a large variety of situations (test, calibration, scientific observations...). We will also show simulations results.

Paper Details

Date Published: 9 July 2008
PDF: 12 pages
Proc. SPIE 7017, Modeling, Systems Engineering, and Project Management for Astronomy III, 70170Z (9 July 2008); doi: 10.1117/12.789056
Show Author Affiliations
L. Piqueras, Univ. de Lyon, Observatoire de Lyon, CNRS (France)
P.-J. Legay, Univ. de Lyon, Observatoire de Lyon, CNRS (France)
E. Legros, Univ. de Lyon, Observatoire de Lyon, CNRS (France)
P. Ferruit, Univ. de Lyon, Observatoire de Lyon, CNRS (France)
A. Pecontal, Univ. de Lyon, Observatoire de Lyon, CNRS (France)
X. Gnata, ASTRIUM GmbH (Germany)
P. Mosner, ASTRIUM GmbH (Germany)


Published in SPIE Proceedings Vol. 7017:
Modeling, Systems Engineering, and Project Management for Astronomy III
George Z. Angeli; Martin J. Cullum, Editor(s)

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