Corresponding characteristics of the alignment parameters in large segmented-mirror telescope system

Mei Hui; Jiayuan Deng; Liquan Dong; Xiaohua Liu; Yuejin Zhao

doi:10.1117/12.882509

9 November 2010 Corresponding characteristics of the alignment parameters in large segmented-mirror telescope system

Mei Hui, Jiayuan Deng, Liquan Dong, Xiaohua Liu, Yuejin Zhao

Proceedings Volume 7853, Advanced Sensor Systems and Applications IV; 785343 (2010) https://doi.org/10.1117/12.882509
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Mei Hui, Jiayuan Deng, Liquan Dong, Xiaohua Liu, and Yuejin Zhao "Corresponding characteristics of the alignment parameters in large segmented-mirror telescope system", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 785343 (9 November 2010); https://doi.org/10.1117/12.882509

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