Mock Observations for the CSST Mission: Main Surveys--the Stray Light
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arXiv
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| Format: | Preprint |
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2025
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| author | Jing-Tian, Xian Lin, Lin Yue-Dong, Fang Xin, Zhang You-Hua, Xu Xian-Min, Meng Hao, Tian Tian-Yi, Zhang Zhang, Ban Guo-Liang, Li Shu-Yan, Xu Wei, Wang |
| author_facet | Jing-Tian, Xian Lin, Lin Yue-Dong, Fang Xin, Zhang You-Hua, Xu Xian-Min, Meng Hao, Tian Tian-Yi, Zhang Zhang, Ban Guo-Liang, Li Shu-Yan, Xu Wei, Wang |
| contents | Stray light significantly influences the detection capabilities of astronomical telescopes. The actual stray-light level during observations depends not only on the telescope's inherent stray-light suppression capability but also on its operational orbit conditions. Accurate estimation of stray-light levels is crucial for assessing image quality and performing realistic scientific simulations. To rapidly estimate stray-light levels under realistic, complex operational conditions, we developed an analytical model tailored to the China Space Station Telescope (CSST). Our model simulates stray-light backgrounds generated by off-field sources such as moonlight, starlight, and earthshine, incorporating the effects of zodiacal light, as well as scattering and ghost images induced by bright in-field stars. The proposed method allows quick and accurate evaluation of stray-light conditions, facilitating both image simulation and observational scheduling. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_06956 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Mock Observations for the CSST Mission: Main Surveys--the Stray Light Jing-Tian, Xian Lin, Lin Yue-Dong, Fang Xin, Zhang You-Hua, Xu Xian-Min, Meng Hao, Tian Tian-Yi, Zhang Zhang, Ban Guo-Liang, Li Shu-Yan, Xu Wei, Wang Instrumentation and Methods for Astrophysics Stray light significantly influences the detection capabilities of astronomical telescopes. The actual stray-light level during observations depends not only on the telescope's inherent stray-light suppression capability but also on its operational orbit conditions. Accurate estimation of stray-light levels is crucial for assessing image quality and performing realistic scientific simulations. To rapidly estimate stray-light levels under realistic, complex operational conditions, we developed an analytical model tailored to the China Space Station Telescope (CSST). Our model simulates stray-light backgrounds generated by off-field sources such as moonlight, starlight, and earthshine, incorporating the effects of zodiacal light, as well as scattering and ghost images induced by bright in-field stars. The proposed method allows quick and accurate evaluation of stray-light conditions, facilitating both image simulation and observational scheduling. |
| title | Mock Observations for the CSST Mission: Main Surveys--the Stray Light |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2511.06956 |