NAOC Open IR
Distortion mapping correction in the AIMS primary mirror testing by a computer-generated hologram
Ke-Wei, E.1; Zhao, Jian-Ke1; Wang, Bo2; Wang, Dong-Guang3; Shen, Yu-Liang3; Fu, Xin1; Xu, Song-Bo1; Li, Jing1; Xue, Xun1; Chang, Ming1; Zhou, Yan1
2021-08-01
Source PublicationRESEARCH IN ASTRONOMY AND ASTROPHYSICS
ISSN1674-4527
Volume21Issue:7Pages:8
AbstractThe National Solar Observatory is currently developing the Accurate Infrared Magnetic Field Measurements of the Sun (AIMS). The primary mirror of the AIMS solar telescope is an off-axis parabolic with a diameter of 1 m and with a large off-axis amount of 1 m. Due to the surface figure of the primary mirror under the used state is directly related to image quality of the whole system, a computer-generated hologram (CGH) is carried out to test the primary mirror, and the test results are used to polish the mirror to a higher surface accuracy. However, the fact that the distortion exists in the testing results leads to the failure of a further guide to deterministic optical processing. In this paper, a distortion correction method is proposed, which uses an orthogonal set of vector polynomials to mapping the coordinates of the mirror and the pixels of fringes, and then an interpolation method is adopted to obtain the corrected results. The testing accuracy by using CGH is also verified by an auto-collimate test experiment. According to the distorted corrected results, the root-mean-square of the surface figure is about 1/50 lambda (lambda = 632.8 nm) after polishing.
Keywordtelescopes techniques interferometric methods astronomical instrumentation methods and techniques
Funding OrganizationWest Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China
DOI10.1088/1674-4527/21/7/165
WOS KeywordORTHONORMAL VECTOR POLYNOMIALS ; OPTIMAL-DESIGN ; UNIT-CIRCLE
Language英语
Funding ProjectWest Light Foundation of the Chinese Academy of Sciences[XAB2017B13] ; National Natural Science Foundation of China[11703072]
Funding OrganizationWest Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; West Light Foundation of the Chinese Academy of Sciences ; West Light Foundation of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000691273200001
PublisherNATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/75322
Collection中国科学院国家天文台
Corresponding AuthorKe-Wei, E.
Affiliation1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China
2.Chinese Acad Sci, Nanjing Astron Instruments, Nanjing 210042, Peoples R China
3.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
Recommended Citation
GB/T 7714
Ke-Wei, E.,Zhao, Jian-Ke,Wang, Bo,et al. Distortion mapping correction in the AIMS primary mirror testing by a computer-generated hologram[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2021,21(7):8.
APA Ke-Wei, E..,Zhao, Jian-Ke.,Wang, Bo.,Wang, Dong-Guang.,Shen, Yu-Liang.,...&Zhou, Yan.(2021).Distortion mapping correction in the AIMS primary mirror testing by a computer-generated hologram.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,21(7),8.
MLA Ke-Wei, E.,et al."Distortion mapping correction in the AIMS primary mirror testing by a computer-generated hologram".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 21.7(2021):8.
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