Optics and Precision Engineering, Volume. 30, Issue 23, 3021(2022)
Measurement and calibration of optical axis changes caused by gravity for ground-based large-aperture telescope
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Fig. 3. Angle deviations between primary and secondary mirror
Fig. 4. Position deviations between primary and secondary mirror
Fig. 5. Optical axis change of primary optical system
Fig. 6. Relative rotation and displacement between primary optical system and tracking optics
Fig. 7. Schematic diagram of determining telescope optical axis change
Fig. 8. Optical axis change of primary optical system by light source
Fig. 9. Optical axis change of primary optical system by star
Fig. 11. Angle deviations between primary and secondary mirror after calibration
Fig. 12. Position deviations between primary and secondary mirror after calibration
Fig. 13. Optical axis change of primary optical system after calibration
Table 1. Specifications of 4 m telescope
View tableView in ArticleTable 1. Specifications of 4 m telescope
Parameter Value Diameter of primary mirror/mm 4 000 Approximate focal length/m 108 F-ratio 27 Field of view/（′） 3 Size of pixel/μm2 10×10
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Honghao WANG, Jianli WANG, Tao CHEN, Yuyan CAO, Baogang CHEN. Measurement and calibration of optical axis changes caused by gravity for ground-based large-aperture telescope[J]. Optics and Precision Engineering, 2022, 30(23): 3021
Paper Information
Received: Oct. 18, 2022
Accepted: --
Published Online: Jan. 10, 2023
The Author Email: WANG Honghao (whh_hit@163.com)
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