High-speed interferometry for James Webb Space Telescope testing

B. Saif; L. Feinberg; R. Keski-Kuha

doi:10.1117/12.2570872

9 September 2021 High-speed interferometry for James Webb Space Telescope testing

B. Saif, L. Feinberg, R. Keski-Kuha

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Proceedings Volume 11813, Tribute to James C. Wyant: The Extraordinaire in Optical Metrology and Optics Education; 118130U (2021) https://doi.org/10.1117/12.2570872
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

High speed interferometry (HSI) is one of the enabling technologies to the successful development and testing of the James Webb Space Telescope (JWST) optical system that consists of a 6.5 meter diameter, segmented, lightweight primary mirror and lightweight carbon fiber composite structure. This paper reviews the interferometry that was used first to demonstrate that the mirror and lightweight composite structure technologies were ready for JWST and to verify performance of the fully assembled primary mirror and the telescope at cryogenic temperature. The tools and techniques developed for JWST are being advanced to benefit future missions that require stable mirrors, precision metering structures, active controls and diagnostic metrology.

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B. Saif, L. Feinberg, and R. Keski-Kuha "High-speed interferometry for James Webb Space Telescope testing", Proc. SPIE 11813, Tribute to James C. Wyant: The Extraordinaire in Optical Metrology and Optics Education, 118130U (9 September 2021); https://doi.org/10.1117/12.2570872

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KEYWORDS

Mirrors

James Webb Space Telescope

Interferometers

Cryogenics

Interferometry

Telescopes

Composites

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