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arXiv · 2205.05962

The Chinese H{\alpha} Solar Explorer (CHASE) mission: An overview

Chuan Li·Cheng Fang·Zhen Li·MingDe Ding·PengFei Chen·Ye Qiu·Wei You·Yuan Yuan·MinJie An·HongJiang Tao·XianSheng Li·Zhe Chen·Qiang Liu·Gui Mei·Liang Yang·Wei Zhang·WeiQiang Cheng·JianXin Chen·ChangYa Chen·Qiang Gu·QingLong Huang·MingXing Liu·ChengShan Han·HongWei Xin·ChangZheng Chen·YiWei Ni·WenBo Wang·ShiHao Rao·HaiTang Li·Xi Lu·Wei Wang·Jun Lin·YiXian Jiang·LingJie Meng·Jian Zhao
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Abstract

The Chinese H{\alpha} Solar Explorer (CHASE), dubbed "Xihe" - Goddess of the Sun, was launched on October 14, 2021 as the first solar space mission of China National Space Administration (CNSA). The CHASE mission is designed to test a newly developed satellite platform and to acquire the spectroscopic observations in the H{\alpha} waveband. The H{\alpha} Imaging Spectrograph (HIS) is the scientific payload of the CHASE satellite. It consists of two observational modes: raster scanning mode and continuum imaging mode. The raster scanning mode obtains full-Sun or region-of-interest spectral images from 6559.7 to 6565.9 {\AA} and from 6567.8 to 6570.6 {\AA} with 0.024 {\AA} pixel spectral resolution and 1 minute temporal resolution. The continuum imaging mode obtains photospheric images in continuum around 6689 {\AA} with the full width at half maximum of 13.4 {\AA}. The CHASE mission will advance our understanding of the dynamics of solar activity in the photosphere and chromosphere. In this paper, we present an overview of the CHASE mission including the scientific objectives, HIS instrument overview, data calibration flow, and first results of on-orbit observations.

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Chuan Li, Cheng Fang, Zhen Li, MingDe Ding, PengFei Chen, Ye Qiu, Wei You, Yuan Yuan, MinJie An, HongJiang Tao, XianSheng Li, Zhe Chen, Qiang Liu, Gui Mei, Liang Yang, Wei Zhang, WeiQiang Cheng, JianXin Chen, ChangYa Chen, Qiang Gu, QingLong Huang, MingXing Liu, ChengShan Han, HongWei Xin, ChangZheng Chen, YiWei Ni, WenBo Wang, ShiHao Rao, HaiTang Li, Xi Lu, Wei Wang, Jun Lin, YiXian Jiang, LingJie Meng, Jian Zhao. 2022-05-12. The Chinese H{\alpha} Solar Explorer (CHASE) mission: An overview. https://doi.org/10.1007/s11433-022-1893-3

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