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Telescope alignment based on the structured lighting of collimated laser beam bundles
Li ZY(李正阳); Jiang X(姜鑫); Han ZJ(韩子健); Yuan XY(袁祥岩)
2022-08-29
Conference NameSPIE Astronomical Telescopes + Instrumentation
Source PublicationSPIE Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V
Volume12188
Conference Date2022-8-29
Conference PlaceMontréal, Québec, Canada
Abstract

The telescope's image quality will deteriorate dramatically when the sensitive optical components are misaligned.  Therefore, a dynamic interferometer or star simulator is usually used to measure the misalignment information of the  sensitive optical components, which can guide the calibration of these misalignments. In this work, we proposed a new  alignment method that the pupil of the telescope is structurally illuminated by a bundle of collimated laser beams firstly,  then the low order aberrations of coma and astigmatism generated by the misalignments are calculated by the deformed  pattern of the laser beams which are recorded by the CCD at the position of in-focus and out-focus, the misalignment  information can be inversely calculated by these aberrations and the telescope can be calibrated by the misalignment  information. Compared to the existing alignment method, this technology can significantly decrease the requirements of  precision measuring instruments or standard star points, etc., and can be used in the alignments of the telescope with  different apertures and different working environments, such as the Antarctica telescope.

Keywordtelescope aberrations alignment method coordinate distortion laser collimator wave-front reconstruction optical collimator
Subject Area天文技术与方法
Language英语
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/2020
Collection会议论文
中国科学院南京天文光学技术研究所知识成果
Affiliation南京天文光学技术研究所
Recommended Citation
GB/T 7714
Li ZY,Jiang X,Han ZJ,et al. Telescope alignment based on the structured lighting of collimated laser beam bundles[C],2022.
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