Anti-Frosting Method for Primary Mirror Film Coating of Large Astronomical Telescope in Antarctica

被引:0
|
作者
Wang J. [1 ,2 ]
Wang Y. [1 ,3 ]
Tian J. [1 ,2 ]
机构
[1] Nanjing Institute of Astronomical Optics and Technology, National Astronomical Observatories, Chinese Academy of Sciences, Nanjing, 210042, Jiangsu
[2] Key Laboratory of Astronomical Optics and Technology, Chinese Academy of Sciences, Nanjing, 210042, Jiangsu
[3] University of Chinese Academy of Sciences, Beijing
来源
| 1600年 / Chinese Optical Society卷 / 37期
关键词
Antarctic 2.5-m optical infrared telescope; Anti-frosting reflector; Indium tin oxide film; Thin films;
D O I
10.3788/AOS201737.0431002
中图分类号
学科分类号
摘要
The 2.5-m optical infrared telescope KDUST will be built in Antarctica by our country. In order to solve the problem of mirror frosting, the anti-frosting method by heating the indium tin oxide (ITO) film is proposed. With this method, the Antarctic Survey Telescope (AST) with sealed transmission structure has successfully been applied at the Antarctic Dome A. The anti-frosting feasibility of ITO thin films integrated in the reflecting film system, the preparation process and the surface shape variation of the anti-frosting reflector at different heating powers are discussed. The experimental results show that the ITO thin film integrated reflector has anti-frosting ability and little influence on the shape of the reflector surface, which can be applied to the large telescope system with reflection configuration in Antarctica. © 2017, Chinese Lasers Press. All right reserved.
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页数:7
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