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Method of evaluation of a mirror surface figure based on frequency domain and its application for the Giant Steerable Science Mirror of the Thirty Meter Telescope [Cover Paper]

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Abstract

We propose a sub-aperture stitching algorithm based on a frequency domain that can be denoted as a power spectral density (PSD). Our algorithm is verified by the experimental data obtained from measuring a \phi 1.23 m mirror at the Changchun Institute of Optics, Fine Mechanics and Physics. Then, we apply it to the Great Steering Science Mirror (GSSM) of the Thirty Meter Telescope (TMT) with the simulated data before the preliminary design phase, and obtain a more objective result on the frequency domain aberrations. Therefore, the sub-aperture stitching-based PSD is expected to be useful for specifying a large aperture mirror surface for mirror vendors.

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DOI:10.3788/COL201513.041201

所属栏目:Instrumentation, measurement, and metrology

收稿日期:2014-10-14

录用日期:2015-01-28

网络出版日期:2015-04-07

作者单位    点击查看

Fei Yang:State Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
Guojun Liu:State Key Laboratory of High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, China
Qichang An:Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
Xuejun Zhang:Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China

联系人作者:联系作者(yangf@ciomp.ac.cn)

备注:This work was supported by the National Natural Science Foundation of China (NSFC) under Grant No. 11403022.

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