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All-sky Guide Star Catalog for CSST

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The China Space Station Telescope(CSST)is a two-meter space telescope with multiple back-end instruments.The Fine Guidance Sensor(FGS)is an essential subsystem of the CSST Precision Image Stability System to ensure the required absolute pointing accuracy and line-of-sight stabilization.In this study,we construct the Main Guide Star Catalog for FGS.To accomplish this,we utilize the information about the FGS and object information from the Gaia Data Release 3.We provide an FGS instrument magnitude and exclude variables,binaries,and high proper motion stars from the catalog to ensure uniform FGS guidance capabilities.Subsequently,we generate a HEALPix index,which provides a hierarchical tessellation of the celestial sphere,and employ the Voronoi algorithm to achieve a homogeneous distribution of stars across the catalog.This distribution ensures adequate coverage and sampling of the sky.The performance of the CSST guide star catalog was assessed by simulating the field of view of the FGS according to the CSST mock survey strategy catalog.The analysis of the results indicates that this catalog provides adequate coverage and accuracy.The catalog's performance meets the FGS requirements,ensuring the functioning of the FGS and its guidance capabilities.

catalogsastrometryinstrumentation:detectors

Hui-Mei Feng、Zi-Huang Cao、Man I Lam、Ran Li、Hao Tian、Da-Yi Yin、Yuan-Yu Yang、Xin Zhang、Dong-Wei Fan、Yi-Qiao Dong、Xin-Feng Li、Wei Wang、Long Li、Hugh R.A.Jones、Yi-Han Tao、Jia-Lu Nie、Pei-Pei Wang、Mao-Yuan Liu、He-jun Yang、Chao Liu

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Key Laboratory of Cosmic Rays(Tibet University),Ministry of Education,Lhasa 850000,China

Institute for Frontiers in Astronomy and Astrophysics,Beijing Normal University,Beijing 102206,China

National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China

University of Chinese Academy of Sciences,Beijing 100049,China

Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 20e0083,China

Technology and Engineering Center for Space Utilization,Chinese Academy of Sciences,Beijing 100094,China

Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China

Centre for Astrophysics,University of Hertfordshire,Hatfield,UK

Beijing University of Technology,Beijing 100124,China

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National Key R&D Program of ChinaNational Key R&D Program of ChinaNational Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)Ministry of Science and Technology of Chinascience research grants from the China Manned Space Projectscience research grants from the China Manned Space ProjectCAS Project for Young Scientists in Basic ResearchK.C.Wong Education Foundation

2022YFF05034032022YFF07115001198810112073047122730771202230612373048122630052020SKA0110100CMS-CSST-2021-B01CMS-CSST-2021-A01YSBR-062

2024

10.1088/1674-4527/ad26b6

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(4)