基于曲率传感的主焦巡天望远镜集成检测方法

安其昌; 吴小霞; 李洪文; 蔡雨岐

doi:10.37188/CO.2023-0010

Volume 16 Issue 3

May 2023

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Chinese Optics > 2023 > 16(3): 535-541.

AN Qi-chang, WU Xiao-xia, LI Hong-wen, CAI Yu-qi. Assembling and test method for main focus survey telescope based on curvature sensing[J]. Chinese Optics, 2023, 16(3): 535-541. doi: 10.37188/CO.2023-0010

Citation:

AN Qi-chang, WU Xiao-xia, LI Hong-wen, CAI Yu-qi. Assembling and test method for main focus survey telescope based on curvature sensing[J]. Chinese Optics, 2023, 16(3): 535-541. doi: 10.37188/CO.2023-0010

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Assembling and test method for main focus survey telescope based on curvature sensing

doi: 10.37188/CO.2023-0010

AN Qi-chang^{1, 2
,
,},
WU Xiao-xia^{1, 2},
LI Hong-wen^{1, 2},
CAI Yu-qi³

1.
Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2.
Jilin Provincial Key Laboratory of Intelligent Wavefront Sensing and Control, Changchun 130033, China
3.
Harbin Institute of Technology, Harbin 150001, China

Funds: Supported by the National Natural Science Foundation of China (No. 62005279, No. 12133009); the Youth Innovation Promotion Association of CAS (No. 2020221); Jilin Science and Technology Development Program (No. 20220402032GH)

More Information

Corresponding author: anjj@mail.ustc.edu.cn
Received Date: 06 Jan 2023
Rev Recd Date: 05 Feb 2023

Available Online: 18 Apr 2023

Abstract

Abstract

The integrated detection of the main focus telescope is realized by sensing the curvature wavefront of the telescope. First of all, the curvature sensing process of the main focus telescope and the basic principle of dynamic stability transfer in multiple links are analyzed using Fourier optics theory. Secondly, the error analysis of static correction and dynamic surface shape measurement in the integrated detection of the main focus telescope is carried out. After that, the degree of freedom locking in the adjustment process is analyzed. Finally, the principle of the integrated detection process is realized through experiments. The obtained wavefront detection residual is better than 0.08λ( λ=633 nm). The spatial resolution is 10/m⁻¹, and the temporal resolution is 0.2 Hz. This method can effectively improve the imaging quality of main focus telescope with the large-aperture large-field, and reduce the demand for the stability of the external environment in the integrated detection process by using the non-interference and high robustness characteristics of the curvature sensor, so as to provide assistance for the more detailed time-domain astronomical observation in the future.
- curvature sensing,
- wavefront aberration,
- main focus telescope,
- integrated detection

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References(14)

References

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