<title>Bending The CFHT Cassegrain Secondary For Optical Figure Improvement</title>

19832 citationsJournal Article

Authors

Pierre Y. Bély · Canada–France–Hawaii Telescope

Derrick Salmon · Canada–France–Hawaii Telescope

Peter Wizinowich · Canada–France–Hawaii Telescope

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.

Topics & Keywords

Adaptive optics and wavefront sensing Advanced optical system design Advanced Surface Polishing Techniques

Publication Details

Published in: Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE

Volume 0444, pp. 253-261

DOI: 10.1117/12.937984

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&lt;title&gt;Bending The CFHT Cassegrain Secondary For Optical Figure Improvement&lt;/title&gt;

Authors

Abstract

Topics & Keywords

Publication Details

<title>Bending The CFHT Cassegrain Secondary For Optical Figure Improvement</title>