Analysis of a spaceborne mirror on a main plate with isostatic mounts

Chia-Yen Chan; Chun-Chieh Lien; Po-Hsuan Huang; Shenq-Tsong Chang; Ting-Ming Huang

doi:10.1117/12.2060511

8 September 2014 Analysis of a spaceborne mirror on a main plate with isostatic mounts

Chia-Yen Chan, Chun-Chieh Lien, Po-Hsuan Huang, Shenq-Tsong Chang, Ting-Ming Huang

Proceedings Volume 9195, Optical System Alignment, Tolerancing, and Verification VIII; 91950K (2014) https://doi.org/10.1117/12.2060511
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

The paper is aimed at obtaining the deformation results and optical aberration configurations of a spaceborne mirror made of ZERODUR® glass on a main plate with three isostatic mounts for a space Cassegrain telescope. On the rear side of the main plate four screws will be locked to fix the focal plane assembly. The locking modes for the four screws will be simulated as push and pull motions in the Z axis for simplification. The finite element analysis and Zernike polynomial fitting are applied to the whole integrated optomechanical analysis process. Under the analysis, three isostatic mounts are bonded to the neutral plane of the mirror. The deformation results and optical aberration configurations under six types of push and pull motions as well as self-weight loading have been obtained. In addition, the comparison between the results under push and pull motions with 0.01 mm and 0.1 mm displacements in Z axis will be attained.

Citation Download Citation

Chia-Yen Chan, Chun-Chieh Lien, Po-Hsuan Huang, Shenq-Tsong Chang, and Ting-Ming Huang "Analysis of a spaceborne mirror on a main plate with isostatic mounts", Proc. SPIE 9195, Optical System Alignment, Tolerancing, and Verification VIII, 91950K (8 September 2014); https://doi.org/10.1117/12.2060511

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