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Proceedings Paper

Designing of supports for a 1.2m active thin mirror
Author(s): Ping Yao; Xuejun Zhang; Yudong Zhang
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Paper Abstract

The support systems of primary mirrors usually consist of axial supports and lateral supports. The surface of an active thin mirror is maintained through actuators on back of the mirror. The axial and lateral supports are designed for a 1.2 m thin mirror with the aspect ratio of 24. The 36 axial supports are equally distributed on three rings and normalized radiuses are 0.275, 0.583 and 0.897 respectively. The numbers of axial supports for each ring are 6, 12 and 18 respectively. Three lateral support units are equally distributed at the outer edge of the mirror. The optimum surfaces are 2.7 nm and 12 nm RMS respectively when the mirror is mounted horizontally and vertically. It’s also demonstrated that the active supports could correct most of manufacture errors.

Paper Details

Date Published: 15 October 2012
PDF: 5 pages
Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 84150H (15 October 2012); doi: 10.1117/12.970310
Show Author Affiliations
Ping Yao, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Graduate School of the Chinese Academy of Sciences (China)
Xuejun Zhang, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)
Yudong Zhang, Institute of Optics and Electronics (China)
Key Lab. on Adaptive Optics (China)


Published in SPIE Proceedings Vol. 8415:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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