MCI: Multi-Channel Imager on the Chinese Space Station Survey Telescope
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2025
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| author | Zheng, Zhen-Ya Xu, Chun Liu, Xiaohua Chen, Yong-He Xu, Fang Zhan, Hu Li, Xinfeng Zheng, Lixin Shan, Huanyuan Zhong, Jing Yan, Zhaojun Yuan, Fang-Ting Jiang, Chunyan Peng, Xiyan Chen, Wei Cheng, Xue Chen, Zhen-Lei Zhu, Shuairu Long, Lin Zhang, Xin Gong, Yan Shao, Li Wang, Wei Zhang, Tianyi Ju, Guohao Li, Chenghao Wang, Wei Li, Zhiyuan Wang, Tao Wang, Junfeng Li, Chengyuan Ma, Bin Wang, Jianguo Wang, Lei Liu, Dezi Lin, Nie Li, Kexin Wen, Xinrong Wu, Maochun Lin, Ruqiu Ji, Xiang |
| author_facet | Zheng, Zhen-Ya Xu, Chun Liu, Xiaohua Chen, Yong-He Xu, Fang Zhan, Hu Li, Xinfeng Zheng, Lixin Shan, Huanyuan Zhong, Jing Yan, Zhaojun Yuan, Fang-Ting Jiang, Chunyan Peng, Xiyan Chen, Wei Cheng, Xue Chen, Zhen-Lei Zhu, Shuairu Long, Lin Zhang, Xin Gong, Yan Shao, Li Wang, Wei Zhang, Tianyi Ju, Guohao Li, Chenghao Wang, Wei Li, Zhiyuan Wang, Tao Wang, Junfeng Li, Chengyuan Ma, Bin Wang, Jianguo Wang, Lei Liu, Dezi Lin, Nie Li, Kexin Wen, Xinrong Wu, Maochun Lin, Ruqiu Ji, Xiang |
| contents | The Multi-Channel Imager (MCI) is a powerful near-ultraviolet (NUV) and visible imager onboard the Chinese Space Station Survey Telescope (CSST). The MCI provides three imaging channels, which are the NUV channel, the Blue channel and the Red channel, with the wavelength range of 255-430 nm, 430-700 nm, and 700-1000 nm, respectively. MCI's three channels can target the same field simultaneously, which is unique compared to other imagers onboard the Hubble Space Telescope (HST) or the James Webb Space Telescope (JWST). Each channel employs a CCD focal plane of 9216 x 9232 pixels and $\sim$7\arcmin.5 x 7\arcmin.5 field of view (FOV), which are about $\gtrsim 4$ times greater than the FOVs of HST imagers. The MCI's three channels feature unprecedented sensitivities and field of views complement the NUV and visible capabilities of the CSST for high-precision photometry and weak-signal detection, which would help build a new standard-star system and the deepest UV-Optical exposures for CSST. Rich filter sets of MCI would help explore other sciences such as local emission line mapping, high-z Ly$α$ emitters searching, etc. Here we present key design features, results of current ground tests, and suggested observing strategies of the MCI. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_14691 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | MCI: Multi-Channel Imager on the Chinese Space Station Survey Telescope Zheng, Zhen-Ya Xu, Chun Liu, Xiaohua Chen, Yong-He Xu, Fang Zhan, Hu Li, Xinfeng Zheng, Lixin Shan, Huanyuan Zhong, Jing Yan, Zhaojun Yuan, Fang-Ting Jiang, Chunyan Peng, Xiyan Chen, Wei Cheng, Xue Chen, Zhen-Lei Zhu, Shuairu Long, Lin Zhang, Xin Gong, Yan Shao, Li Wang, Wei Zhang, Tianyi Ju, Guohao Li, Chenghao Wang, Wei Li, Zhiyuan Wang, Tao Wang, Junfeng Li, Chengyuan Ma, Bin Wang, Jianguo Wang, Lei Liu, Dezi Lin, Nie Li, Kexin Wen, Xinrong Wu, Maochun Lin, Ruqiu Ji, Xiang Instrumentation and Methods for Astrophysics Astrophysics of Galaxies Solar and Stellar Astrophysics The Multi-Channel Imager (MCI) is a powerful near-ultraviolet (NUV) and visible imager onboard the Chinese Space Station Survey Telescope (CSST). The MCI provides three imaging channels, which are the NUV channel, the Blue channel and the Red channel, with the wavelength range of 255-430 nm, 430-700 nm, and 700-1000 nm, respectively. MCI's three channels can target the same field simultaneously, which is unique compared to other imagers onboard the Hubble Space Telescope (HST) or the James Webb Space Telescope (JWST). Each channel employs a CCD focal plane of 9216 x 9232 pixels and $\sim$7\arcmin.5 x 7\arcmin.5 field of view (FOV), which are about $\gtrsim 4$ times greater than the FOVs of HST imagers. The MCI's three channels feature unprecedented sensitivities and field of views complement the NUV and visible capabilities of the CSST for high-precision photometry and weak-signal detection, which would help build a new standard-star system and the deepest UV-Optical exposures for CSST. Rich filter sets of MCI would help explore other sciences such as local emission line mapping, high-z Ly$α$ emitters searching, etc. Here we present key design features, results of current ground tests, and suggested observing strategies of the MCI. |
| title | MCI: Multi-Channel Imager on the Chinese Space Station Survey Telescope |
| topic | Instrumentation and Methods for Astrophysics Astrophysics of Galaxies Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2509.14691 |