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Proceedings Paper

James Webb Space Telescope optical telescope element mirror coatings
Author(s): Ritva A. Keski-Kuha; Charles W. Bowers; Manuel A. Quijada; James B. Heaney; Benjamin Gallagher; Andrew McKay; Ian Stevenson
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Paper Abstract

James Webb Space Telescope (JWST) Optical Telescope Element (OTE) mirror coating program has been completed. The science goals of the JWST mission require a uniform, low stress, durable optical coating with high reflectivity over the JWST spectral region. The coating has to be environmentally stable, radiation resistant and compatible with the cryogenic operating environment. The large size, 1.52 m point to point, light weight, beryllium primary mirror (PM) segments and flawless coating process during the flight mirror coating program that consisted coating of 21 flight mirrors were among many technical challenges. This paper provides an overview of the JWST telescope mirror coating program. The paper summarizes the coating development program and performance of the flight mirrors.

Paper Details

Date Published: 21 September 2012
PDF: 12 pages
Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 84422J (21 September 2012); doi: 10.1117/12.925470
Show Author Affiliations
Ritva A. Keski-Kuha, NASA Goddard Space Flight Ctr. (United States)
Charles W. Bowers, NASA Goddard Space Flight Ctr. (United States)
Manuel A. Quijada, NASA Goddard Space Flight Ctr. (United States)
James B. Heaney, SGT, Inc. (United States)
Benjamin Gallagher, Ball Aerospace & Technologies Corp. (United States)
Andrew McKay, Northrop Grumman Aerospace Systems (United States)
Ian Stevenson, Quantum Coating Inc. (United States)

Published in SPIE Proceedings Vol. 8442:
Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave
Mark C. Clampin; Giovanni G. Fazio; Howard A. MacEwen; Jacobus M. Oschmann Jr., Editor(s)

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