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In-orbit Performance of the Near-Infrared Spectrograph NIRSpec on the James Webb Space Telescope

Published version
Peer-reviewed

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Authors

Maiolino, Roberto 

Abstract

The Near-Infrared Spectrograph (NIRSpec) is one of the four focal plane instruments on the James Webb Space Telescope. In this paper, we summarize the in-orbit performance of NIRSpec, as derived from data collected during its commissioning campaign and the first few months of nominal science operations. More specifically, we discuss the performance of some critical hardware components such as the two NIRSpec Hawaii-2RG (H2RG) detectors, wheel mechanisms, and the micro-shutter array. We also summarize the accuracy of the two target acquisition procedures used to accurately place science targets into the slit apertures, discuss the current status of the spectro-photometric and wavelength calibration of NIRSpec spectra, and provide the as measured sensitivity in all NIRSpec science modes. Finally, we point out a few important considerations for the preparation of NIRSpec science programs.

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Paper

Journal Title

PASP

Conference Name

Journal ISSN

0004-6280
1538-3873

Volume Title

Publisher

The Astronomical Society of the Pacific
Sponsorship
STFC ERF