Dome C site testing: long term statistics of integrated optical turbulence parameters at ground level
Dome C site testing: long term statistics of integrated optical turbulence parameters at ground level
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Dome C 站点测试：地面综合光学湍流参数的长期统计
DOI：
10.1017/s1743921312017036
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
C. Pouzenc
中科院分区：
文献类型：
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作者：
E. Aristidi;A. Agabi;E. Fossat;A. Ziad;Lyu Abe;E. Bondoux;G. Bouchez;Z. Challita;F. Jeanneaux;D. Mékarnia;D. Petermann;C. Pouzenc
摘要本文根据南极洲冰穹C的DIMM和GSM数据，提出了长期的现场测试统计数据。这些数据是从2003年底开始收集的关于明亮的星星老人星的。我们给出了可见光（波长500 nm）的积分湍流参数的值。在离地面8m、3m和20m的高度上，视宁度的中值分别为1.2arcsec、2.0arcsec和0.8arcsec。等晕角中值为4.0弧秒，外尺度中值为7.5米。我们发现视宁度和等晕角都表现出很强的季节依赖性（冬季视宁度较大，而等晕角较小）。
Abstract We present long term site testing statistics based on DIMM and GSM data obtained at Dome C, Antarctica. These data have been collected on the bright star Canopus since the end of 2003. We give values of the integrated turbulence parameters in the visible (wavelength 500 nm). The median value we obtained for the seeing are 1.2 arcsec, 2.0 arcsec and 0.8 arcsec at respective elevations of 8m, 3m and 20m above the ground. The isoplanatic angle median value is 4.0 arcsec and the median outer scale is 7.5m. We found that both the seeing and the isoplanatic angle exhibit a strong dependence with the season (the seeing is larger in winter while the isoplanatic angle is smaller).