Mirror seeing of the Antarctic survey telescope

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	Mirror seeing of the Antarctic survey telescope
	ZHANG Kaiyuan; LI Zhengyang; YUAN Xiangyan; PEI Chong
	2014-09
发表期刊	Advances in Polar Science
卷号	25 期号:3 页码:133-137
摘要	Site test ing results indicate thal Antarctic Dome A is an excellent ground-based astronomical sile sui table for observations ranging from visible to infrared wavelengths. However, the harsh environment in Antarctica, especially the very low temperature and atmospheric pressure, always produces frost on the telescopes' mirrors, which are exposed to the air. Since the Dome A site is still unattended, the Antarctic telescope tubes are always designed to be filled with dry nitrogen, and the outer surfaces of the oplical system are heated by an indium-tin oxide thin film. These precautions can prevent optical surfaces from frosting over, but they degrade the image quality by introducing additional rnirror seeing. Based on testing observations of the second Antarctic Survey Telescope (AST3-2) in the Mohe site in China, rnirror seeing resulting from the heated aspheric plate has been rneasured using micro-thennal sensors. Results comparing the real-time atmospheric seeing monitored by Ihe Differenlial Image Motion Monitor and real-time exarninations of image quality agree well.
关键词	Mirror Seeing Anta Rctic Survey Telescopes Dome a Turbulence
学科领域	南极望远镜 ; 天文技术与方法
文献类型	期刊论文
条目标识符	http://ir.niaot.ac.cn/handle/114a32/802
专题	期刊论文
推荐引用方式 GB/T 7714	ZHANG Kaiyuan,LI Zhengyang,YUAN Xiangyan,et al. Mirror seeing of the Antarctic survey telescope[J]. Advances in Polar Science,2014,25(3):133-137.
APA	ZHANG Kaiyuan,LI Zhengyang,YUAN Xiangyan,&PEI Chong.(2014).Mirror seeing of the Antarctic survey telescope.Advances in Polar Science,25(3),133-137.
MLA	ZHANG Kaiyuan,et al."Mirror seeing of the Antarctic survey telescope".Advances in Polar Science 25.3(2014):133-137.

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