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

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arxiv 2301.13766 v1 pith:2PTK5SGQ submitted 2023-01-31 astro-ph.IM

T. Böker , T. L. Beck , S. M. Birkmann , G. Giardino , C. Keyes , N. Kumari , J. Muzerolle , T. Rawle
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P. Zeidler Y. Abul-Huda C. Alves de Oliveira S. Arribas K. Bechtold R. Bhatawdekar N. Bonaventura A. J. Bunker A. J. Cameron S. Carniani S. Charlot M. Curti N. Espinoza P. Ferruit M. Franx P. Jakobsen D. Karakla M. López-Caniego N. Lützgendorf R. Maiolino E. Manjavacas A. P. Marston S. H. Moseley P. Ogle M. Perna M. Peña-Guerrero N. Pirzkal R. Plesha C. R. Proffitt B. J. Rauscher H.-W. Rix B. Rodríguez del Pino Z. Rustamkulov E. Sabbi D. K. Sing M. Sirianni M. te Plate L. Úbeda G. M. Wahlgren E. Wislowski R. Wu C. J. Willott
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keywords nirspecscienceperformancediscussin-orbitjamesnear-infraredspace
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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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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. First Light and Assembly of GalaxieS (FLAGS) I: The JWST/NIRCam Number Counts and IGL as Constraints on Galaxy Formation Models

    astro-ph.GA 2026-08 conditional novelty 6.0 of 10

    FLAGS-I delivers the deepest JWST/NIRCam number counts to date, new 2.77 and 4.10 micron IGL constraints, and a model comparison that ranks SC-SAM first.

  2. A clear detection of proper motion confirms that the claimed $\mathbf{z\simeq32}$ galaxy candidate, "Capotauro'', is a Y-type brown dwarf

    astro-ph.GA 2026-08 accept novelty 6.0 of 10

    Capotauro, previously a candidate galaxy at z about 32, is confirmed as a Y-type brown dwarf near 730 pc by a 6.2 sigma proper motion measured over 3.5 years.

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