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 Name | SPIE Astronomical Telescopes + Instrumentation |
Source Publication | SPIE Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V |
Volume | 12188 |
Conference Date | 2022-8-29 |
Conference Place | Montréal, 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. |
Keyword | telescope 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 |
Identifier | http://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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Telescope alignment (1579KB) | 会议论文 | 开放获取 | CC BY-NC-SA | View Download |
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