3 November 1983 Bending The CFHT Cassegrain Secondary For Optical Figure Improvement
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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.
© (1983) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Pierre Y. Bely, Derrick A. Salmon, Peter L. Wizinowich, Alain Tournaire, "Bending The CFHT Cassegrain Secondary For Optical Figure Improvement", Proc. SPIE 0444, Advanced Technology Optical Telescopes II, (3 November 1983); doi: 10.1117/12.937984; https://doi.org/10.1117/12.937984

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