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Ground calibration and network of the first CATCH pathfinder

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arxiv 2410.17833 v1 pith:ANGZZY4T submitted 2024-10-23 astro-ph.IM

Yiming Huang , Jingyu Xiao , Lian Tao , Shuang-Nan Zhang , Qian-Qing Yin , Yusa Wang , Zijian Zhao , Chen Zhang
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Qingchang Zhao Xiang Ma Shujie Zhao Heng Zhou Xiangyang Wen Zhengwei Li Shaolin Xiong Juan Zhang Qingcui Bu Jirong Cang Dezhi Cao Wen Chen Siran Ding Yanfeng Dai Min Gao Yang Gao Huilin He Shujin Hou Dongjie Hou Tai Hu Guoli Huang Yue Huang Liping Jia Ge Jin Dalin Li Jinsong Li Panping Li Yajun Li Xiaojing Liu Ruican Ma Lingling Men Xingyu Pan Liqiang Qi Liming Song Xianfei Sun Qingwen Tang Liyuan Xiong Yibo Xu Sheng Yang Yanji Yang Yong Yang Aimei Zhang Wei Zhang Yifan Zhang Yueting Zhang Donghua Zhao Kang Zhao Yuxuan Zhu
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classification astro-ph.IM
keywords calibrationsystemcatchgroundmissioncatch-1datadetectors
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The Chasing All Transients Constellation Hunters (CATCH) space mission is focused on exploring the dynamic universe via X-ray follow-up observations of various transients. The first pathfinder of the CATCH mission, CATCH-1, was launched on June 22, 2024, alongside the Space-based multiband astronomical Variable Objects Monitor (SVOM) mission. CATCH-1 is equipped with narrow-field optimized Micro Pore Optics (MPOs) featuring a large effective area and incorporates four Silicon Drift Detectors (SDDs) in its focal plane. This paper presents the system calibration results conducted before the satellite integration. Utilizing the data on the performance of the mirror and detectors obtained through the system calibration, combined with simulated data, the ground calibration database can be established. Measuring the relative positions of the mirror and detector system, which were adjusted during system calibration, allows for accurate installation of the entire satellite. Furthermore, the paper outlines the operational workflow of the ground network post-satellite launch.

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