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Proceedings Paper

Analysis investigation of supporting and restraint conditions on the surface deformation of a collimator primary mirror
Author(s): Chia-Yen Chan; Zhen-Ting You; Bo-Kai Huang; Yi-Cheng Chen; Ting-Ming Huang
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Paper Abstract

For meeting the requirements of the high-precision telescopes, the design of collimator is essential. The diameter of the collimator should be larger than that of the target for the using of alignment. Special supporting structures are demanded to reduce the deformation of gravity and to control the surface deformation induced by the mounting force when inspecting large-aperture primary mirrors. By using finite element analysis, a ZERODUR® mirror of a diameter of 620 mm will be analyzed to obtain the deformation induced by the supporting structures. Zernike polynomials will also be adopted to fit the optical surface and separate corresponding aberrations. Through the studies under different boundary conditions and supporting positions of the inner ring, it is concluded that the optical performance will be excellent under a strong enough supporter.

Paper Details

Date Published: 2 September 2015
PDF: 7 pages
Proc. SPIE 9573, Optomechanical Engineering 2015, 95730V (2 September 2015); doi: 10.1117/12.2187658
Show Author Affiliations
Chia-Yen Chan, Instrument Technology Research Ctr. (Taiwan)
Zhen-Ting You, National Central Univ. (Taiwan)
Bo-Kai Huang, National Central Univ. (Taiwan)
Yi-Cheng Chen, National Central Univ. (Taiwan)
Ting-Ming Huang, Instrument Technology Research Ctr. (Taiwan)

Published in SPIE Proceedings Vol. 9573:
Optomechanical Engineering 2015
Alson E. Hatheway, Editor(s)

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