TMT: stressed mirror polishing fixture study

Details TMT: stressed mirror polishing fixture study TMT: stressed mirror polishing fixture study

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006spie.6267e..90s&link_type=abstract

Ground-based and Airborne Telescopes. Edited by Stepp, Larry M.. Proceedings of the SPIE, Volume 6267, pp. 62672R (2006).

Physics

1

Scientific paper

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.

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