The accuracy of the NIRSpec grating wheel position sensors

Guido De Marchi; Stephan M. Birkmann; Torsten Böker; Pierre Ferruit; Giovanna Giardino; Marco Sirianni; Martin Stuhlinger; Maurice B. J. te Plate; Jean-Christophe Salvignol; Reiner Barho; Xavier Gnata; Robert Lemke; Michel Kosse; Peter Mosner

doi:10.1117/12.925625

21 September 2012 The accuracy of the NIRSpec grating wheel position sensors

Guido De Marchi, Stephan M. Birkmann, Torsten Böker, Pierre Ferruit, Giovanna Giardino, Marco Sirianni, Martin Stuhlinger, Maurice B. J. te Plate, Jean-Christophe Salvignol, Reiner Barho, Xavier Gnata, Robert Lemke, Michel Kosse, Peter Mosner

Author Affiliations +

Proceedings Volume 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave; 84423G (2012) https://doi.org/10.1117/12.925625
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

Abstract

We present a detailed analysis of measurements collected during the first ground-based cryogenic calibration campaign of NIRSpec, the Near-Infrared Spectrograph for the James Webb Space Telescope (JWST). In this paper we concentrate on the performances of the NIRSpec grating wheel, showing that the magneto-resistive position sensors installed on the wheel provide very accurate information on the position of the wheel itself, thereby enabling an efficient acquisition of the science targets and a very accurate extraction and calibration of their spectra.

Citation Download Citation

Guido De Marchi, Stephan M. Birkmann, Torsten Böker, Pierre Ferruit, Giovanna Giardino, Marco Sirianni, Martin Stuhlinger, Maurice B. J. te Plate, Jean-Christophe Salvignol, Reiner Barho, Xavier Gnata, Robert Lemke, Michel Kosse, and Peter Mosner "The accuracy of the NIRSpec grating wheel position sensors", Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 84423G (21 September 2012); https://doi.org/10.1117/12.925625

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available