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JWST NIRSpec Cryogenic Light Shield MechanismThe focal plane detectors for the Near-Infrared Spectrometer (NIRSpec) instrument on the James Webb Space Telescope (JWST) require a light tight cover for calibration as well as an open field-of-view during ground performance testing within a cryogenic dewar. In order to achieve the light attenuation requirements when closed as well as provide a open field of view for the detectors within the cryogenic dewar, a light shield mechanism was designed. This paper discusses the details of the light shield mechanism design, development, and test results.
Document ID
20070032656
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Sharma, Rajeev K. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 23, 2013
Publication Date
September 18, 2007
Subject Category
Optics
Meeting Information
Meeting: European Space Mechanisms and Tribology Symposium
Location: Liverpool
Country: United Kingdom
Start Date: September 18, 2007
End Date: September 21, 2007
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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