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Title:
Mirror seeing of the Antarctic survey telescope
Author: Zhang, KaiYuan(张凯元) ; Li, ZhengYang(李正阳) ; Yuan, XiangYan(袁祥岩) ; Pei, Chong(裴冲)
Source: Advances in Polar Science
Issued Date: 2014-09
Volume: 25, Issue:3, Pages:133-137
Keyword: mirror seeing ; Anta rctic survey telescopes ; Dome A ; turbulence
Subject: 天文望远镜::南极望远镜 ; 天文技术与方法
English Abstract: 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.
Content Type: 期刊论文
URI: http://ir.niaot.ac.cn/handle/114a32/802
Appears in Collections:南极天文技术中心_期刊论文
中科院南京天光所知识成果_期刊论文
望远镜新技术研究室_期刊论文

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Recommended Citation:
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.
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