Bending The CFHT Cassegrain Secondary For Optical Figure Improvement

Pierre Y. Bely; Derrick A. Salmon; Peter L. Wizinowich; Alain Tournaire

doi:10.1117/12.937984

3 November 1983 Bending The CFHT Cassegrain Secondary For Optical Figure Improvement

Pierre Y. Bely, Derrick A. Salmon, Peter L. Wizinowich, Alain Tournaire

Proceedings Volume 0444, Advanced Technology Optical Telescopes II; (1983) https://doi.org/10.1117/12.937984
Event: 1983 Astronomy Conferences, 1983, London, United Kingdom

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.

Citation Download Citation

Pierre Y. Bely, Derrick A. Salmon, Peter L. Wizinowich, and Alain Tournaire "Bending The CFHT Cassegrain Secondary For Optical Figure Improvement", Proc. SPIE 0444, Advanced Technology Optical Telescopes II, (3 November 1983); https://doi.org/10.1117/12.937984

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available