Estimating the mirror seeing for a large optical telescope with a numerical method

doi:10.1088/1674-4527/18/5/60

CORC > 国家天文台 > 中国科学院国家天文台

	Estimating the mirror seeing for a large optical telescope with a numerical method
	Zhang, En-Peng 1,3; Cui, Xiang-Qun 2; Li, Guo-Ping 2; Zhang, Yong 2; Shi, Jian-Rong 1,3; Zhao, Yong-Heng 1,3
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2018-05-01
卷号	18 期号:5 页码:6
关键词	astronomical instrumentation methods: numerical telescopes
ISSN号	1674-4527
DOI	10.1088/1674-4527/18/5/60
英文摘要	It is widely accepted that mirror seeing is caused by turbulent fluctuations in the index of air refraction in the vicinity of a telescope mirror. Computational Fluid Dynamics (CFD) is a useful tool to evaluate the effects of mirror seeing. In this paper, we present a numerical method to estimate the mirror seeing for a large optical telescope (similar to 4 m) in cases of natural convection with the ANSYS ICEPAK software. We get the FWHM of the image for different inclination angles (i) of the mirror and different temperature differences (Delta T) between the mirror and ambient air. Our results show that the mirror seeing depends very weakly on i, which agrees with observational data from the Canada-France-Hawaii Telescope. The numerical model can be used to estimate mirror seeing in the case of natural convection although with some limitations. We can determine Delta T for thermal control of the primary mirror according to the simulation, empirical data and site seeing.
资助项目	Guo Shou Jing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Large Scientific Equipments Repairing Project of Chinese Academy of Sciences: "Cooling Facility and Monitoring Instruments for LAMOST Dome Seeing Improvement" ; National Key Basic Research Program of China[Y41J051N01]
WOS关键词	FUTURE GIANT TELESCOPE ; SYSTEM ; DESIGN ; DOME
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:000432273900012
资助机构	Guo Shou Jing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Guo Shou Jing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Large Scientific Equipments Repairing Project of Chinese Academy of Sciences: "Cooling Facility and Monitoring Instruments for LAMOST Dome Seeing Improvement" ; Large Scientific Equipments Repairing Project of Chinese Academy of Sciences: "Cooling Facility and Monitoring Instruments for LAMOST Dome Seeing Improvement" ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Guo Shou Jing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Guo Shou Jing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Large Scientific Equipments Repairing Project of Chinese Academy of Sciences: "Cooling Facility and Monitoring Instruments for LAMOST Dome Seeing Improvement" ; Large Scientific Equipments Repairing Project of Chinese Academy of Sciences: "Cooling Facility and Monitoring Instruments for LAMOST Dome Seeing Improvement" ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Guo Shou Jing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Guo Shou Jing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Large Scientific Equipments Repairing Project of Chinese Academy of Sciences: "Cooling Facility and Monitoring Instruments for LAMOST Dome Seeing Improvement" ; Large Scientific Equipments Repairing Project of Chinese Academy of Sciences: "Cooling Facility and Monitoring Instruments for LAMOST Dome Seeing Improvement" ; National Key Basic Research Program of China ; National Key Basic Research Program of China ; Guo Shou Jing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Guo Shou Jing Telescope (the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, LAMOST) ; Large Scientific Equipments Repairing Project of Chinese Academy of Sciences: "Cooling Facility and Monitoring Instruments for LAMOST Dome Seeing Improvement" ; Large Scientific Equipments Repairing Project of Chinese Academy of Sciences: "Cooling Facility and Monitoring Instruments for LAMOST Dome Seeing Improvement" ; National Key Basic Research Program of China ; National Key Basic Research Program of China
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/21624]
专题	中国科学院国家天文台
通讯作者	Zhang, En-Peng
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Nanjing Inst Astron Opt & Technol, Nanjing 210042, Jiangsu, Peoples R China 3.Chinese Acad Sci, Key Lab Opt Astron, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zhang, En-Peng,Cui, Xiang-Qun,Li, Guo-Ping,et al. Estimating the mirror seeing for a large optical telescope with a numerical method[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(5):6.
APA	Zhang, En-Peng,Cui, Xiang-Qun,Li, Guo-Ping,Zhang, Yong,Shi, Jian-Rong,&Zhao, Yong-Heng.(2018).Estimating the mirror seeing for a large optical telescope with a numerical method.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(5),6.
MLA	Zhang, En-Peng,et al."Estimating the mirror seeing for a large optical telescope with a numerical method".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.5(2018):6.