The Lyman-alpha Solar Telescope (LST) for the ASO-S mission - II. design of LST
Chen, Bo1,2; Li, Hui3,4; Song, Ke-Fei1; Guo, Quan-Feng1; Zhang, Pei-Jie1; He, Ling-Ping1,2; Dai, Shuang1; Wang, Xiao-Dong1; Wang, Hai-Feng1; Liu, Chun-Long1; Zhang, Hong-Ji1; Zhang, Guang1; Wang, Yunqi1; Liu, Shi-Jie1,2; Zhang, Hong-Xin1; Liu, Lei1; Mao, Shi-Lei1; Liu, Yang1; Peng, Jia-Hao1; Wang, Peng1; Sun, Liang1; Han, Zhen-Wei1; Wang, Yan-Long1; Wu, Kun1; Ding, Guang-Xing1; Zhou, Peng1; Zheng, Xin1; Xia, Ming-Yi1; Wu, Qing-Wen1; Xie, Jin-Jiang1; Chen, Ya1; Song, Shu-Mei1; Wang, Hong5; Zhu, Bo5; Chu, Chang-Bo5; Yang, Wen-Gang5; Feng, Li3,4; Huang, Yu3,4; Gan, Wei-Qun3,4; Li, Ying3,4; Li, Jing-Wei3,4; Lu, Lei3,4; Xue, Jian-Chao3,4; Ying, Bei-Li3,4; Sun, Ming-Zhe6; Zhu, Cheng7; Bao, Wei-Min7; Deng, Lei7; Yin, Zeng-Shan7
Corresponding AuthorLi, Hui(
AbstractAs one of the three payloads for the Advanced Space-based Solar Observatory (ASO-S) mission, the Lyman-alpha (Ly alpha) Solar Telescope (LST) is composed of three instruments: a Solar Corona Imager (SCI), a Ly alpha Solar Disk Imager (SDI) and a full-disk White-light Solar Telescope (WST). When working in-orbit, LST will simultaneously perform high-resolution imaging observations of all regions from the solar disk to the inner corona up to 2.5R(circle dot) (R-circle dot stands for the mean solar radius) with a spatial resolution of 4.8 '' and 1.2 '' for coronal and disk observations, respectively, and a temporal resolution of 30-120 s and 1-120 s for coronal and disk observations, respectively. The maximum exposure time can be up to 20 s due to precise pointing and image stabilization function. Among the three telescopes of LST, SCI is a dual-waveband coronagraph simultaneously and independently observing the inner corona in the HI Ly alpha (121.6 +/- 10nm) line and white light (WL) (700 +/- 40 nm) wavebands by using a narrowband Ly alpha beam splitter and has a field of view (FOV) from 1.1 to 2.5R(circle dot). The stray-light suppression level can attain <10(-6) B-circle dot (B-circle dot is the mean brightness of the solar disk) at 1.1R(circle dot) and <= 5x10(-8) B-circle dot at 2.5R(circle dot). SDI and WST are solar disk imagers working in the Ly alpha line and 360.0 nm wavebands, respectively, which adopt an off-axis two-mirror reflective structure with an FOV up to 1.2R(circle dot), covering the inner coronal edge area and relating to coronal imaging. We present the up-to-date design for the LST payload.
Keywordtelescopes instrumentation: high angular resolution Sun: flares Sun: coronal mass ejections (CMEs) Sun: UV radiation
Indexed BySCI
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000507468400005
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Document Type期刊论文
Corresponding AuthorLi, Hui
Affiliation1.Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Changchun 130033, Peoples R China
2.State Key Lab Appl Opt, Changchun 130033, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing 210034, Peoples R China
4.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
5.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China
6.Shandong Univ, Weihai 264209, Peoples R China
7.Chinese Acad Sci, Innovat Acad Microsatellites, Shanghai 201210, Peoples R China
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Chen, Bo,Li, Hui,Song, Ke-Fei,et al. The Lyman-alpha Solar Telescope (LST) for the ASO-S mission - II. design of LST[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(11):16.
APA Chen, Bo.,Li, Hui.,Song, Ke-Fei.,Guo, Quan-Feng.,Zhang, Pei-Jie.,...&Yin, Zeng-Shan.(2019).The Lyman-alpha Solar Telescope (LST) for the ASO-S mission - II. design of LST.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(11),16.
MLA Chen, Bo,et al."The Lyman-alpha Solar Telescope (LST) for the ASO-S mission - II. design of LST".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.11(2019):16.
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