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Proceedings Paper

TMT: stressed mirror polishing fixture study
Author(s): Stephen F. Sporer
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Paper Abstract

This paper examines the use of Stressed Mirror Polishing for rapid and low cost fabrication of the large number of mirror segments required for the TMT primary mirror. Prior experience fabricating Keck mirror segments is used as a starting point. Specific refinements are made to processes and tooling for faster and more economical fabrication of segments ready for Ion Beam Figuring. Analytical calculations, finite element analyses, design trades, and stressing fixture conceptual designs are presented. Feasibility of Stressed Mirror Polishing is demonstrated and recommendations for further work are given.

Paper Details

Date Published: 26 June 2006
PDF: 13 pages
Proc. SPIE 6267, Ground-based and Airborne Telescopes, 62672R (26 June 2006); doi: 10.1117/12.693114
Show Author Affiliations
Stephen F. Sporer, SSG Precision Optronics (United States)


Published in SPIE Proceedings Vol. 6267:
Ground-based and Airborne Telescopes
Larry M. Stepp, Editor(s)

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