Results in Physics (Jan 2024)
Impact of mirror local defects on system scattering in telescopes
- Zhongkai Liu,
- Jincheng Wang,
- Rongkuan Leng,
- Xiaokun Wang,
- Min Zhang,
- Jing Wang,
- Mengxue Cai,
- Wenhan Li,
- Bin Liu,
- Lingzhong Li,
- Qiang Cheng,
- Longxiang Li,
- Xiao Luo,
- Xuejun Zhang
Affiliations
- Zhongkai Liu
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Jincheng Wang
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Rongkuan Leng
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Xiaokun Wang
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China; Corresponding author at: Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China.
- Min Zhang
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China
- Jing Wang
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Mengxue Cai
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Wenhan Li
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Bin Liu
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Lingzhong Li
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Qiang Cheng
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Longxiang Li
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Xiao Luo
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Xuejun Zhang
- Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, Jilin 130033, China; University of Chinese Academy of Sciences, Beijing 100049, China; Key Laboratory of Optical System Advanced Manufacturing Technology, Chinese Academy of Sciences, Changchun, Jilin 130033, China; State Key Laboratory of Applied Optics, Changchun, Jilin 130033, China
- Journal volume & issue
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Vol. 56
p. 107265
Abstract
To calculate the scattering impact of scratches on space-based telescope systems accurately, this study proposes fitting scratch scattering using an anisotropic scattering model based on actual test results. The stray light nonuniformity and total stray light of each mirror in a Cook-type off-axis three-mirror system was calculated. A scratch illuminated with unit radiation power can generate a maximum stray light level of 7 × 10-5 and can obscure dark targets with a brightness ratio of 1 × 10-5 to 8 × 10-5. Furthermore, as the wavelength decreases, the total stray light generated by this scratch can reach 5.7 × 10-4 when illuminated with unit radiation power in the 200 nm ultraviolet band. Such scratches on the mirrors of an off-axis three-mirror telescope cause 7–8 times higher nonuniformity of stray light than roughness scattering, decreasing signal-to-noise ratio and affecting target recognition and image processing.
