On the technologies of Hα imaging spectrograph for the CHASE mission  

作　　者：Qiang Liu Hongjiang Tao Changzheng Chen Chengshan Han Zhe Chen Gui Mei Liang Yang Qinglong Hu Hongwei Xin Xiansheng Li Hongyu Guan Donglin Xue Mingchao Zhu Changhong Hu Qinghua Ha Yukun He Cheng Fang Chuan Li Zhen Li 

机构地区：[1]Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China [2]School of Astronomy and Space Science,Nanjing University,Nanjing 210023,China [3]Key Laboratory for Modern Astronomy and Astrophysics,Ministry of Education,Nanjing 210023,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2022年第8期29-36,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the China National Space Administration(CNSA)。

摘　　要：The Hα imaging spectrograph(HIS) is the scientific payload of the first solar space mission, the Chinese Hα solar explorer(CHASE), supported by the China National Space Administration(CNSA). The CHASE/HIS achieves, for the first time in space, Hα spectroscopic observations with high spectral and temporal resolutions. Separate channels for the raster scanning mode(RSM) and continuum imaging mode(CIM) are integrated into one, and a highly integrated design is achieved through multiple folding of the optical path and ultra-light miniaturized components. The design of HIS implements a number of key technologies such as high-precision scanning of the optical field of view(FOV), high-precision integrated manufacturing inspection, a large-tolerance pre-filter window, and full-link solar radiation calibration. The HIS instrument has a pixel spectral resolution of 0.024 ? and can complete a full-Sun scanning within 46 s.

关 键 词：space-based telescope design and performance testing of optical systems scan imaging 

分 类 号：V476.4[航空宇航科学与技术—飞行器设计]