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Proceedings Paper

Stray light performance for the James Webb Space Telescope
Author(s): Paul A. Lightsey; Zongying Wei; Dennis L. Skelton; Charles W. Bowers; Kimberly I. Mehalick; Shaun R. Thomson; Perry Knollenberg; Jonathan W. Arenberg
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Paper Abstract

The James Webb Space Telescope (JWST) is a large cryogenic telescope observing over a spectral range from 0.6 μm to 29 μm. A large sun shield blocks sunlight and provides thermal isolation for the optics. Analyses characterizing the stray light reaching the instrument focal planes from the galactic sky, zodiacal background, bright objects near the line-of-sight, and earth and moon shine are presented along with the self-generated thermal infrared background from Observatory structures. The latter requires thermal analysis to characterize the Observatory temperatures. Dependencies on the surface properties of BRDF and emittance are discussed for the underlying materials and the effects of contamination

Paper Details

Date Published: 28 August 2014
PDF: 12 pages
Proc. SPIE 9143, Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave, 91433P (28 August 2014); doi: 10.1117/12.2055485
Show Author Affiliations
Paul A. Lightsey, Ball Aerospace & Technologies Corp. (United States)
Zongying Wei, Ball Aerospace & Technologies Corp. (United States)
Dennis L. Skelton, NASA Goddard Space Flight Ctr. (United States)
Charles W. Bowers, NASA Goddard Space Flight Ctr. (United States)
Kimberly I. Mehalick, NASA Goddard Space Flight Ctr. (United States)
Shaun R. Thomson, NASA Goddard Space Flight Ctr. (United States)
Perry Knollenberg, Northrop Grumman Aerospace Systems (United States)
Jonathan W. Arenberg, Northrop Grumman Aerospace Systems (United States)


Published in SPIE Proceedings Vol. 9143:
Space Telescopes and Instrumentation 2014: Optical, Infrared, and Millimeter Wave
Jacobus M. Oschmann; Mark Clampin; Giovanni G. Fazio; Howard A. MacEwen, Editor(s)

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