Chen Bo1; Li Hui2; Song Kefei1; Guo Quanfeng1; Zhang Peijie1; He Lingping1; Dai Shuang1; Wang Xiaodong1; Wang Haifeng1; Liu Chunlong1; Zhang Hongji1; Zhang Guang1; Wang Yunqi1; Liu Shijie1; Zhang Hongxin1; Liu Lei1; Mao Shilei1; Liu Yang1; Peng Jiahao1; Wang Peng1; Sun Liang1; Liu Yang1; Han Zhenwei1; Wang Yanlong1; Wu Kun1; Ding Guangxing1; Zhou Peng1; Zheng Xin1; Xia Mingyi1; Wu Qingwen1; Xie Jinjiang1; Chen Ya1; Song Shumei1; Wang Hong3; Zhu Bo3; Chu Changbo3; Yang Wengang3; Feng Li2; Huang Yu2; Gan Weiqun2; Li Ying2; Li Jingwei2; Lu Lei2; Xue Jianchao2; Ying Beili2; Sun Mingzhe4; Zhu Cheng5; Bao Weimin5; Deng Lei5; Yin Zengshan5
Source Publicationresearchinastronomyandastrophysics
AbstractAs one of the three payloads for the Advanced Space-based Solar Observatory(ASO-S)mission,the Lyman-alpha(Lyα)Solar Telescope(LST)is composed of three instruments: a Solar Corona Imager(SCI), a Lyα 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_⊙(R_⊙ 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 Lyα(121.6±10nm)line and white light(WL)(700±40 nm)wavebands by using a narrowband Lyα beam splitter and has a field of view(FOV)from 1.1 to 2.5R_⊙.The stray-light suppression level can attain <10~(–6) B_⊙(B_⊙ is the mean brightness of the solar disk)at 1.1R_⊙ and ≤5×10~(–8) B_⊙ at 2.5R_⊙.SDI and WST are solar disk imagers working in the Lyα line and 360.0 nm wavebands, respectively, which adopt an off-axis two-mirror reflective structure with an FOV up to 1.2R_⊙, covering the inner coronal edge area and relating to coronal imaging.We present the up-to-date design for the LST payload.
Document Type期刊论文
Recommended Citation
GB/T 7714
Chen Bo,Li Hui,Song Kefei,et al. thelymanalphasolartelescopelstfortheasosmissioniidesignoflst[J]. researchinastronomyandastrophysics,2019,19(11).
APA Chen Bo.,Li Hui.,Song Kefei.,Guo Quanfeng.,Zhang Peijie.,...&Yin Zengshan.(2019).thelymanalphasolartelescopelstfortheasosmissioniidesignoflst.researchinastronomyandastrophysics,19(11).
MLA Chen Bo,et al."thelymanalphasolartelescopelstfortheasosmissioniidesignoflst".researchinastronomyandastrophysics 19.11(2019).
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