A distortion solution for the Bok telescope with four CCD chips

doi:10.1093/mnras/stz459

CORC > 国家天文台 > 中国科学院国家天文台

	A distortion solution for the Bok telescope with four CCD chips
	Wang, N.1,3; Peng, Q. Y.1,3; Zhou, X.2,3; Peng, X. Y.2,3; Peng, H. W.1,3
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2019-05-01
卷号	485 期号:2 页码:1626-1634
关键词	methods: observational techniques: image processing astrometry
ISSN号	0035-8711
DOI	10.1093/mnras/stz459
英文摘要	The Beijing-Arizona Sky Survey (BASS) is an imaging survey that uses the 2.3-m Bok telescope at Kitt Peak. In order to realize the astrometric potential of the Bok telescope and improve the astrometry of BASS, a distortion solution for the Bok telescope is needed. In the past, we used a single lookup table to correct all the positional errors. However, this method cannot be applied to the reduction of observations from the Bok telescope, which is equipped with four CCD chips. We thus developed a method that is quite different from our previous one, using two third-order polynomials to fit the lookup table. By using the polynomial geometric distortion (GD) correction, the astrometry of BASS is greatly improved. Moreover, an additional lookup-table correction is found to be more effective to obtain the final GD. The results show that the positional measurement precision of the appropriate bright stars is estimated at about 20 mas or even better in each direction. In addition, the relative positions of the chips are measured. The change of the inter-chip gaps in the horizontal or vertical is no more than 5 pixels between 2016 and 2017, and the change of the roll angle is no more than 0 degrees.1.
资助项目	National Natural Science Foundation of China (NSFC)[U1431227] ; Chinese Academy of Sciences (CAS)[U1431227] ; National Natural Science Foundation of China[11703008] ; National Natural Science Foundation of China[11873026] ; Natural Science Foundation of Guangdong Province, China[2016A030313092] ; Opening Project of Guangdong Province Key Laboratory of Computational Science at Sun Yat-sen University ; Fundamental Research Funds for the Central Universities
WOS关键词	POSITIONS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	OXFORD UNIV PRESS
WOS记录号	WOS:000474886200009
资助机构	National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province, China ; Natural Science Foundation of Guangdong Province, China ; Opening Project of Guangdong Province Key Laboratory of Computational Science at Sun Yat-sen University ; Opening Project of Guangdong Province Key Laboratory of Computational Science at Sun Yat-sen University ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province, China ; Natural Science Foundation of Guangdong Province, China ; Opening Project of Guangdong Province Key Laboratory of Computational Science at Sun Yat-sen University ; Opening Project of Guangdong Province Key Laboratory of Computational Science at Sun Yat-sen University ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province, China ; Natural Science Foundation of Guangdong Province, China ; Opening Project of Guangdong Province Key Laboratory of Computational Science at Sun Yat-sen University ; Opening Project of Guangdong Province Key Laboratory of Computational Science at Sun Yat-sen University ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC) ; National Natural Science Foundation of China (NSFC) ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province, China ; Natural Science Foundation of Guangdong Province, China ; Opening Project of Guangdong Province Key Laboratory of Computational Science at Sun Yat-sen University ; Opening Project of Guangdong Province Key Laboratory of Computational Science at Sun Yat-sen University ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/26909]
专题	中国科学院国家天文台
通讯作者	Wang, N.; Peng, Q. Y.
作者单位	1.Jinan Univ, Dept Comp Sci, Guangzhou 510632, Guangdong, Peoples R China 2.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 3.Jinan Univ, Sino French Joint Lab Astrometry Dynam & Space S, Guangzhou 510632, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wang, N.,Peng, Q. Y.,Zhou, X.,et al. A distortion solution for the Bok telescope with four CCD chips[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,485(2):1626-1634.
APA	Wang, N.,Peng, Q. Y.,Zhou, X.,Peng, X. Y.,&Peng, H. W..(2019).A distortion solution for the Bok telescope with four CCD chips.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,485(2),1626-1634.
MLA	Wang, N.,et al."A distortion solution for the Bok telescope with four CCD chips".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 485.2(2019):1626-1634.