James Webb Space Telescope optical telescope element mirror coatings | Zendy

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

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James Webb Space Telescope optical telescope element mirror coatings

Author(s) -

Ritva Keski-Kuha,

Charles W. Bowers,

Manuel A. Quijada,

James B. Heaney,

Benjamin Gallagher,

Andrew McKay,

Ian Stevenson

Publication year - 2012

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.925470

Subject(s) - james webb space telescope , coating , telescope , primary mirror , optics , optical coating , physics , secondary mirror , spitzer space telescope , materials science , nanotechnology

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.

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