PMO OpenIR
A comparative study of the thermal performance of primary mirror at the four typical sites
Wang, Hairen1,2; Cheng, Jingquan1,2; Lou, Zheng1,2; Liang, Ming1,2; Zheng, Xianzhong1,2; Zuo, Yingxi1,2; Yang, Ji1,2
2018
Source PublicationOPTIK
ISSN0030-4026
Volume174Pages:727-738
Corresponding AuthorWang, Hairen(Hairenwang@pmo.ac.cn)
AbstractWe propose a heat dissipation model to assess whether the material and thickness of the primary mirror of a telescope design exceed the upper constraint of the requirement in terms of the four typical sites: Dome A of Antarctica, Ali of Tibet, Mauna Kea of Hawaii and Chajnantor of Chile. It accounts for thermal conduction, heat convection, and radiation heat transfer whose effective sky temperature depends on the ambient air temperature, vapor pressure, and relative humidity. In addition, the values of the heat convection coefficient, sharply decreasing due to the low atmospheric pressure, are considered. We apply the model to analyze the thermal performance of a 2.5 m primary mirror of a wide field survey telescope (WFST). Under the conditions of the four typical sites in the world, a comparative study of WFST for two thicknesses of the primary mirror is presented via steady thermal analysis and transient thermal analysis using the proposed model. The results reveal that all RMS errors on the mirror surface of primary mirrors are smaller than 5 nm, which fulfill the performance requirements of WFST, and demonstrate that the proposed model is useful for evaluating the heat dissipation of the primary mirror on those sites.
KeywordHeat dissipation analysis Primary mirror Steady thermal analysis Transient thermal analysis Wide field survey telescope
DOI10.1016/j.ijleo.2018.05.008
WOS KeywordVAPOR-PRESSURE FORMULATION ; TELESCOPE ; OPTICS
Indexed BySCI
Language英语
WOS Research AreaOptics
WOS SubjectOptics
WOS IDWOS:000447247700092
PublisherELSEVIER GMBH, URBAN & FISCHER VERLAG
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/21157
Collection中国科学院紫金山天文台
Corresponding AuthorWang, Hairen
Affiliation1.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Wang, Hairen,Cheng, Jingquan,Lou, Zheng,et al. A comparative study of the thermal performance of primary mirror at the four typical sites[J]. OPTIK,2018,174:727-738.
APA Wang, Hairen.,Cheng, Jingquan.,Lou, Zheng.,Liang, Ming.,Zheng, Xianzhong.,...&Yang, Ji.(2018).A comparative study of the thermal performance of primary mirror at the four typical sites.OPTIK,174,727-738.
MLA Wang, Hairen,et al."A comparative study of the thermal performance of primary mirror at the four typical sites".OPTIK 174(2018):727-738.
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