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Proceedings Paper

Bending The CFHT Cassegrain Secondary For Optical Figure Improvement
Author(s): Pierre Y. Bely; Derrick A. Salmon; Peter L. Wizinowich; Alain Tournaire
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Paper Abstract

The Cassegrain secondary of the CFHT telescope is bent in its cell in order to remove residual spherical aberration. Bending forces are generated by pneumatic pressure and vacuum. Their resultant is kept equal to zero in order to "float" the mirror in its cell and avoid support reaction.

Paper Details

Date Published: 3 November 1983
PDF: 9 pages
Proc. SPIE 0444, Advanced Technology Optical Telescopes II, (3 November 1983); doi: 10.1117/12.937984
Show Author Affiliations
Pierre Y. Bely, Canada-France-Hawaii Telescope Corporation (United States)
Derrick A. Salmon, Canada-France-Hawaii Telescope Corporation (United States)
Peter L. Wizinowich, Canada-France-Hawaii Telescope Corporation (United States)
Alain Tournaire, Institut National d'Astronomie et de Geophysique (France)

Published in SPIE Proceedings Vol. 0444:
Advanced Technology Optical Telescopes II
Lawrence D. Barr; Brian Mack, Editor(s)

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