NIRSpec - the JWST Multi-Object Spectrograph

Details NIRSpec - the JWST Multi-Object Spectrograph NIRSpec - the JWST Multi-Object Spectrograph

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hstc.worke..56m&link_type=abstract

"2010 Space Telescope Science Institute Calibration Workshop - Hubble after SM4. Preparing JWST, held 21-23 July 2010 at Space T

Physics

Optics

Scientific paper

The Near-Infrared Spectrograph (NIRSpec), to be launched in 2014 on the James Webb Space Telescope, will be the first slit-based multi-object spectrograph used in space, and is designed to simultaneously provide spectra of faint objects in the range 0.6 - 5.0 micron at resolutions of R=100, R=1000 and R=2700. The all-reflective wide-field optics, a novel MEMS-based programmable micro-shutter array slit selection device, and large format low-noise HgCdTe detectors combine to allow simultaneous observations of ˜100 objects within a 3.4x3.4 arcmin2 field. A 3x3 arcsec2 integral field unit and five fixed slits are also available. The NIRSpec sensitivity is expected to allow detection of a continuum flux of 20 nJy (AB˜28) in R 100 mode, and a line flux of 6x10-19 erg s^-1 cm^-2 in R 1000 mode, both at S/N ˜ 3 in 104 seconds. NIRSpec is being built for the European Space Agency by EADS Astrium as part of the European contribution to the JWST mission, with the micro-shutter and detector arrays being provided by NASA/GSFC.

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