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Detector arrays for the James Webb Space Telescope near-infrared spectrograph

Detector arrays for the James Webb Space Telescope near-infrared spectrograph

Publication date: 18 September 2007

Authors: Rauscher, B.J. et al.

Journal: Proceedings of SPIE, the International Society for Optical Engineering
Volume: 6690
Year: 2007

Copyright: SPIE

Focal Plane Arrays for Space Telescopes III. Edited by Grycewicz, Thomas J.; Marshall, Cheryl J.; Warren, Penny G. Proceedings of the SPIE, Volume 6690, pp. 66900M (2007)

The James Webb Space Telescope's (JWST) Near Infrared Spectrograph (NIRSpec) incorporates two 5 micron cutoff (lambdaco=5 micron) 2048×2048 pixel Teledyne HgCdTe HAWAII-2RG sensor chip assemblies. These detector arrays, and the two Teledyne SIDECAR application specific integrated circuits that control them, are operated in space at T ~ 37 K. In this article, we provide a brief introduction to NIRSpec, its detector subsystem (DS), detector readout in the space radiation environment, and present a snapshot of the developmental status of the NIRSpec DS as integration and testing of the engineering test unit begins.

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