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Proceedings Paper

Updated cryogenic performance test results for the flight model JWST fine guidance sensor
Author(s): Neil Rowlands; Alexander Beaton; Pierre Chayer; Craig Haley; Calvin Midwinter; Kevin Volk; Gerry Warner; Julia Zhou
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Paper Abstract

The Integrated Science Instrument Module (ISIM) for the James Webb Space Telescope (JWST) has successfully completed its final cryogenic performance verification tests. The performance of the newly upgraded Fine Guidance Sensor (FGS) / Near Infrared Imager and Slitless Spectrometer (NIRISS) was evaluated in these tests. We describe some of the key guider performance results which have been obtained and compare them to previous results with an older generation of H2RG infrared detector arrays. The identification mode sensitivity improvement is described along with noise equivalent angle (NEA) sensitivity performance improvements in tracking and fine guiding modes. Tracking mode allows the Observatory line of sight to settle in advance of the fine guidance mode and also facilitates moving target observing. The NEA of the FGS-Guiders will in part determine the ultimate image quality of the JWST Observatory.

Paper Details

Date Published: 29 July 2016
PDF: 15 pages
Proc. SPIE 9904, Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave, 99044D (29 July 2016); doi: 10.1117/12.2232172
Show Author Affiliations
Neil Rowlands, Honeywell Aerospace (Canada)
Alexander Beaton, Honeywell Aerospace (Canada)
Pierre Chayer, Space Telescope Science Institute (United States)
Craig Haley, Honeywell Aerospace (Canada)
Calvin Midwinter, Honeywell Aerospace (Canada)
Kevin Volk, Space Telescope Science Institute (United States)
Gerry Warner, Honeywell Aerospace (Canada)
Julia Zhou, Honeywell Aerospace (Canada)

Published in SPIE Proceedings Vol. 9904:
Space Telescopes and Instrumentation 2016: Optical, Infrared, and Millimeter Wave
Howard A. MacEwen; Giovanni G. Fazio; Makenzie Lystrup; Natalie Batalha; Nicholas Siegler; Edward C. Tong, Editor(s)

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