28 September 2011 Calibrating the position of images and spectra in the NIRSpec instrument for the James Webb Space Telescope
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Abstract
The Near Infrared Spectrograph (NIRSpec) is one of four science instruments on board the James Webb Space Telescope (JWST). NIRSpec offers multi-object, fixed slit, and integral field spectroscopy. There are eight optical elements mounted on the grating wheel assembly (GWA), six gratings, a double-pass prism, and a mirror. The precise knowledge of the position and tilt of these elements is critical for target acquisition and an accurate extraction and calibration of science data. We present the concept of calibrating the position/tilt sensors during the NIRSpec flight model ground calibration campaign, the performance of the sensors and first results concerning the GWA repeatability.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Guido De Marchi, Guido De Marchi, Maurice B. J. te Plate, Maurice B. J. te Plate, Stephan M. Birkmann, Stephan M. Birkmann, Torsten Böker, Torsten Böker, Pierre Ferruit, Pierre Ferruit, Giovanna Giardino, Giovanna Giardino, Peter Jakobsen, Peter Jakobsen, Marco Sirianni, Marco Sirianni, Jean-Christophe Savignol, Jean-Christophe Savignol, Xavier Gnata, Xavier Gnata, Reiner Barho, Reiner Barho, Michel Kosse, Michel Kosse, Peter Mosner, Peter Mosner, Bernhard Dorner, Bernhard Dorner, Giovanni Cresci, Giovanni Cresci, Fabian Rosales-Ortega, Fabian Rosales-Ortega, Martin Stuhlinger, Martin Stuhlinger, Torsten Gross, Torsten Gross, Thomas Leikert, Thomas Leikert, } "Calibrating the position of images and spectra in the NIRSpec instrument for the James Webb Space Telescope", Proc. SPIE 8150, Cryogenic Optical Systems and Instruments XIII, 81500C (28 September 2011); doi: 10.1117/12.893914; https://doi.org/10.1117/12.893914
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