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Proceedings Paper

Pixel classification for the JWST fine guidance sensor
Author(s): Neil Rowlands; Gerry Warner; Charles Berndt; Loic Albert; Pierre Chayer
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Paper Abstract

The James Webb Space Telescope Fine Guidance Sensor makes use of three 2048x2048 five micron cutoff HAWAII-2RG HgCdTe detectors from Teledyne Imaging Systems. The FGS consists of two Guider channels and a Near-InfraRed Imager and Slitless Spectrograph (NIRISS) channel. We report here on the characterization of the flight detectors at the sub-system level and after integration to the flight instrument. The FGS-Guider has a number of unique readout modes which are required to support observatory operations. Of critical importance is the identification and classification of pixels which, if left unmasked or unprocessed, would compromise the guider performance. We report on these classification methods and on the detailed behaviour of key bad pixel types which can impact guider performance.

Paper Details

Date Published: 25 September 2012
PDF: 12 pages
Proc. SPIE 8453, High Energy, Optical, and Infrared Detectors for Astronomy V, 845313 (25 September 2012); doi: 10.1117/12.926678
Show Author Affiliations
Neil Rowlands, COM DEV Space Systems (Canada)
Gerry Warner, COM DEV Space Systems (Canada)
Charles Berndt, COM DEV Space Systems (Canada)
Loic Albert, Univ. de Montréal (Canada)
Pierre Chayer, Space Telescope Science Institute (United States)

Published in SPIE Proceedings Vol. 8453:
High Energy, Optical, and Infrared Detectors for Astronomy V
Andrew D. Holland; James W. Beletic, Editor(s)

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