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Proceedings Paper

Corresponding characteristics of the alignment parameters in large segmented-mirror telescope system
Author(s): Mei Hui; Jiayuan Deng; Liquan Dong; Xiaohua Liu; Yuejin Zhao
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Paper Abstract

We describe a method for measuring and aligning phase parameters with Zernike polynomials in large segmented-mirror telescope system. Numerical model is developed to establish the dependence of tip-tilt phase parameters on the polynomial coefficients C1 and C2 and know the real displacement direction though the measurement and calculation of Zernike polynomials. Its performance is analytically examined in detail and some experimental results demonstrating its effectiveness are also given. This method extremely simplified the segment phase adjustment process to a certainty. The measurement result proved that the tilt is 15λ and the tip is 7λ (λ=633nm), showing that the precision is about to nanometer level.

Paper Details

Date Published: 9 November 2010
PDF: 8 pages
Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 785343 (9 November 2010); doi: 10.1117/12.882509
Show Author Affiliations
Mei Hui, Beijing Institute of Technology (China)
Jiayuan Deng, Shanghai Jiao Tong Univ. (China)
Liquan Dong, Beijing Institute of Technology (China)
Xiaohua Liu, Beijing Institute of Technology (China)
Yuejin Zhao, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 7853:
Advanced Sensor Systems and Applications IV
Brian Culshaw; Yanbiao Liao; Anbo Wang; Xiaoyi Bao; Xudong Fan; Lin Zhang, Editor(s)

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