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Stray light analysis of the Xinglong 2.16-m telescope

文献类型：期刊论文

作者Li, Tao-Ran1; Wang, Jian-Feng1; Zhang, Xiao-Ming1; Zhao, Yong1,2; Tian, Jian-Feng1
刊名RESEARCH IN ASTRONOMY AND ASTROPHYSICS
出版日期2020-03-01
卷号20期号:3页码:12
关键词telescope scattering methods data analysis
ISSN号1674-4527
DOI10.1088/1674-4527/20/3/30
英文摘要An effort towards understanding the problems associated with stray light related to the Xinglong 2.16-m telescope is presented to estimate the stray light performance of the telescope itself and provide a method for improving stray light suppression. Stray light analysis for the 2.16-m telescope model, which consists of an onion shaped dome, telescope structure, equatorial mount and telescope optics, has been developed in two cases (1) pointing to 60 degrees and (2) pointing to zenith, in both azimuth and elevation directions. The Point Source Normalized Irradiance Transmittance (PSNIT), which is generally used for assessing stray light and is uncorrelated to entrance aperture, is calculated with a series of off-axis angles. It shows that the PSNIT values are less than 10(-7) when off-axis angles are larger than +/- 20 degrees. The dominant contributors to stray light (primary and secondary mirror, telescope structure and dome) are identified to guide performance improvement. The analyses indicate that significant benefit can be realized by adding only five vanes inside the bottom portion of the secondary baffle. In the case of pointing to zenith, the PSNIT values will decrease about 40% on average.
资助项目National Natural Science Foundation of China[11703043] ; Joint Research Fund in Astronomy, National Natural Science Foundation of China[U1831209]
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000525675000001
出版者NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China ; Joint Research Fund in Astronomy, National Natural Science Foundation of China
源URL[http://ir.bao.ac.cn/handle/114a11/56145]  
专题中国科学院国家天文台
通讯作者Li, Tao-Ran
作者单位1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Li, Tao-Ran,Wang, Jian-Feng,Zhang, Xiao-Ming,et al. Stray light analysis of the Xinglong 2.16-m telescope[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2020,20(3):12.
APA Li, Tao-Ran,Wang, Jian-Feng,Zhang, Xiao-Ming,Zhao, Yong,&Tian, Jian-Feng.(2020).Stray light analysis of the Xinglong 2.16-m telescope.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,20(3),12.
MLA Li, Tao-Ran,et al."Stray light analysis of the Xinglong 2.16-m telescope".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 20.3(2020):12.

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来源：国家天文台

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