NAOC Open IR
Defocus spot detection of astronomical optical system
Hu Tian-Zhu1,2,3; Zhang Yong1,2; Cui Xiang-Qun1,2; Li Ye-Ping1,2; Bai Hua1,2; Pan Xiu-Shan1,2,3
2020-03-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume20Issue:3Pages:8
AbstractDefocusing spot size detection is especially essential for aberration analysis and correction of optical systems. In the case of far defocusing, the celestial forms a pupil image on the detector, and the size of the image is linearly changed with the defocusing distance, and can be used to correct the optical system and analyze the image quality. Based on the focal plane attitude detection of Large Sky Area Multi- Object Fiber Spectroscopy Telescope (LAMOST), this paper uses a variety of methods to detect the size of the defocusing spot of LAMOST telescope. For the particularity of the spot, the average value spacing algorithm, the peak value spacing algorithm, the ellipse fitting algorithm, and the multi-peak Gaussian fitting algorithm are used to detect the spot size. This paper will introduce these four methods, in which the average value spacing algorithm is proposed by the author of this paper. The advantages and disadvantages of the four methods are compared. The experimental results show that the average value spacing algorithm can achieve better accuracy of spot size detection in the four algorithms.
Keywordmethods data analysis techniques image processing telescopes
Funding OrganizationNational Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1088/1674-4527/20/3/41
Language英语
Funding ProjectNational Development and Reform Commission ; National Key Basic Research Program of China[2015CB857100] ; National Natural Science Foundation of China[U1331204] ; National Natural Science Foundation of China[14473050]
Funding OrganizationNational Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Development and Reform Commission ; National Development and Reform Commission ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000526407600001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/56182
Collection中国科学院国家天文台
Corresponding AuthorZhang Yong
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Peoples R China
2.Chinese Acad Sci, Key Lab Astron Opt & Technol, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Hu Tian-Zhu,Zhang Yong,Cui Xiang-Qun,et al. Defocus spot detection of astronomical optical system[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(3):8.
APA Hu Tian-Zhu,Zhang Yong,Cui Xiang-Qun,Li Ye-Ping,Bai Hua,&Pan Xiu-Shan.(2020).Defocus spot detection of astronomical optical system.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(3),8.
MLA Hu Tian-Zhu,et al."Defocus spot detection of astronomical optical system".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.3(2020):8.
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