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Proceedings Paper

Study of bonding positions of isostatic mounts on a lightweight primary mirror
Author(s): C. Y. Chan; Y. C. Chen; S. T. Chang; T. M. Huang; M. Y. Hsu
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Paper Abstract

The bonding positions of three isostatic mounts on the primary mirror of a Cassegrain telescope under self-weight loading have both been studied in the paper. Finite element method and Zernike polynomial fitting are complementarily applied to the ZERODUR® primary mirror with a pre-designed lightweight configuration on the back. Eight bonding positions of isostatic mounts with respect to the center of gravity of the mirror have been chosen to investigate the mirror surface deforms as well as the induced optical aberrations. It is found that astigmatism becomes remarkably higher than other optical aberrations under self-weight loading. The optimum bonding position with the least astigmatism value has also been obtained.

Paper Details

Date Published: 23 October 2012
PDF: 7 pages
Proc. SPIE 8516, Remote Sensing System Engineering IV, 85160M (23 October 2012); doi: 10.1117/12.929430
Show Author Affiliations
C. Y. Chan, National Applied Research Labs. (Taiwan)
Y. C. Chen, National Central Univ. (Taiwan)
S. T. Chang, National Applied Research Labs. (Taiwan)
T. M. Huang, National Applied Research Labs. (Taiwan)
M. Y. Hsu, National Applied Research Labs. (Taiwan)


Published in SPIE Proceedings Vol. 8516:
Remote Sensing System Engineering IV
Philip E. Ardanuy; Jeffery J. Puschell, Editor(s)

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