14 September 2011 JWST mirror production status
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Abstract
The James Webb Space Telescope (JWST) is an on axis three mirror anastigmat telescope with a primary mirror, a secondary mirror, and a tertiary mirror. The JWST mirrors are constructed from lightweight beryllium substrates and the primary mirror consists of 18 hexagonal mirror segments each approximately 1.5 meters point to point. Ball Aerospace and Technologies Corporation leads the mirror manufacturing team and the team utilizes facilities at six locations across the United States. The fabrication process for each individual mirror assembly takes approximately six years due to limitations dealing with the number of segments and manufacturing & test facilities. The primary mirror Engineering Development Unit (EDU) recently completed the manufacturing process with the final cryogenic performance test of the mirror segment assembly. The 18 flight primary mirrors segments, the secondary mirror, and the tertiary mirror are all advanced in the mirror production process with many segments through the final polishing process, coating process, final assembly, vibration testing, and final acceptance testing. Presented here is a status of the progress through the manufacturing process for all of the flight mirrors.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Benjamin Gallagher, Mark Bergeland, Bob Brown, David Chaney, Tracy Copp, Jake Lewis, Brad Shogrin, Koby Smith, Jeff Sokol, James Hadaway, Holger Glatzel, Patrick Johnson, Allen Lee, Dan Patriarca, Ian Stevenson, Jason Cluney, Tom Parsonage, Jeff Calvert, Brady Rodgers, Andy McKay, Scott Texter, Lester Cohen, Lee Feinberg, "JWST mirror production status", Proc. SPIE 8146, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts V, 814607 (14 September 2011); doi: 10.1117/12.892326; https://doi.org/10.1117/12.892326
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