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首页> 外文期刊>Publications of the Astronomical Society of the Pacific >A G-SCIDAR for ground-layer turbulence measurements at high vertical resolution
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A G-SCIDAR for ground-layer turbulence measurements at high vertical resolution

机译:G-SCIDAR,用于在高垂直分辨率下进行地层湍流测量

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摘要

We propose a new method based on the generalized SCIDAR principle to characterize the vertical distribution of the turbulence in the first few hundred meters above the telescope with a better vertical resolution than usually achievable by such an instrument. Using a wide binary star (35" separation) and analyzing the spatio-temporal cross-correlation images, we achieve a C-N(2) profile with a vertical resolution of a few tens of meters. We present the principle and the data-reduction process of this method and show first results obtained with a SCIDAR instrument mounted to the Vatican Advanced Technology Telescope (VATT) on the top of Mount Graham. As an application, we estimate the fraction of the turbulence between the dome of the VATT and the primary mirror of the Large Binocular Telescope.
机译:我们提出了一种基于广义SCIDAR原理的新方法,用于表征望远镜上方头几百米内湍流的垂直分布,其垂直分辨率要比通常由这种仪器所能达到的更好。使用宽双星(35英寸分离)并分析时空互相关图像,我们获得了具有几十米垂直分辨率的CN(2)轮廓。我们介绍了原理和数据缩减过程方法,并显示了使用安装在格雷厄姆山顶的梵蒂冈先进技术望远镜(VATT)上的SCIDAR仪器获得的第一个结果作为应用,我们估算了VATT穹顶和主镜之间的湍流分数双筒望远镜的镜头。

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