James Webb Space Telescope optical telescope element mirror coatings

Ritva A. Keski-Kuha; Charles W. Bowers; Manuel A. Quijada; James B. Heaney; Benjamin Gallagher; Andrew McKay; Ian Stevenson

doi:10.1117/12.925470

21 September 2012 James Webb Space Telescope optical telescope element mirror coatings

Ritva A. Keski-Kuha, Charles W. Bowers, Manuel A. Quijada, James B. Heaney, Benjamin Gallagher, Andrew McKay, Ian Stevenson

Author Affiliations +

Proceedings Volume 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave; 84422J (2012) https://doi.org/10.1117/12.925470
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

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.

Citation Download Citation

Ritva A. Keski-Kuha, Charles W. Bowers, Manuel A. Quijada, James B. Heaney, Benjamin Gallagher, Andrew McKay, and Ian Stevenson "James Webb Space Telescope optical telescope element mirror coatings", Proc. SPIE 8442, Space Telescopes and Instrumentation 2012: Optical, Infrared, and Millimeter Wave, 84422J (21 September 2012); https://doi.org/10.1117/12.925470

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