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Detectors for the James Webb Space Telescope Near-Infrared SpectrographThe Near-Infrared Spectrograph (NIRSpec) is the James Webb Space Telescope's primary near-infrared spectrograph. NASA is providing the NIRSpec detector subsystem, which consists of the focal plane array, focal plane electronics, cable harnesses, and software. The focal plane array comprises two closely-butted lambda (sub co) approximately 5 micrometer Rockwell HAWAII- 2RG sensor chip assemblies. After briefly describing the NIRSpec instrument, we summarize some of the driving requirements for the detector subsystem, discuss the baseline architecture (and alternatives), and presents some recent detector test results including a description of a newly identified noise component that we have found in some archival JWST test data. We dub this new noise component, which appears to be similar to classical two-state popcorn noise in many aspects, "popcorn mesa noise." We close with the current status of the detector subsystem development effort.
Document ID
20040171843
Acquisition Source
Goddard Space Flight Center
Document Type
Preprint (Draft being sent to journal)
Authors
Rauscher, Bernard J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Figer, Donald F. (Space Telescope Science Inst. Baltimore, MD, United States)
Regan, Michael W. (Space Telescope Science Inst. Baltimore, MD, United States)
Boeker, Torsten (European Space Agency. European Space Research and Technology Center, ESTEC Noordwijk, Netherlands)
Garnett, James (Rockwell Scientific Co., LLC Camarillo, CA, United States)
Hill, Robert J. (Science Systems and Applications, Inc. Greenbelt, MD, United States)
Bagnasco, Georgio (European Space Agency. European Space Research and Technology Center, ESTEC Noordwijk, Netherlands)
Balleza, Jesus (Space Telescope Science Inst. Baltimore, MD, United States)
Barney, Richard (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bergeron, Louis E. (Space Telescope Science Inst. Baltimore, MD, United States)
Date Acquired
September 7, 2013
Publication Date
January 1, 2004
Subject Category
Instrumentation And Photography
Distribution Limits
Public
Copyright
Public Use Permitted.

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