论文标题
2017年在圆顶A中的云盖和极光污染来自KLCAM
Cloud Cover and Aurora Contamination at Dome A in 2017 from KLCAM
论文作者
论文摘要
南极洲的圆顶A具有许多特征，使其成为从光学到Terahertz的天文观测的绝佳位置。仍然需要定量站点测试来确认站点的属性。在本文中，我们介绍了Kunlun Cloud和Aurora Monitor（KLCAM）的云覆盖物和Aurora污染的统计分析。 KLCAM是一种自动无人看管的全套相机，旨在长期监视可用的观测时间和圆顶上的光学天空背景。它于2017年1月在Dome〜A安装，在澳大利亚冬季工作，并在490天内收集了超过47,000张图像。五个人进行了云覆盖和极光污染的半定量视觉数据分析。分析表明，在83％的时间里，夜空无云，这在与其他观测站相比的比较中对圆顶进行了排名。尽管在图像上以近45％的时间在某个地方检测到了极光，但最强的极光发射线可以用定制的过滤器过滤掉。
Dome A in Antarctica has many characteristics that make it an excellent site for astronomical observations, from the optical to the terahertz. Quantitative site testing is still needed to confirm the site's properties. In this paper, we present a statistical analysis of cloud cover and aurora contamination from the Kunlun Cloud and Aurora Monitor (KLCAM). KLCAM is an automatic, unattended all-sky camera aiming for long-term monitoring of the usable observing time and optical sky background at Dome~A. It was installed at Dome~A in January 2017, worked through the austral winter, and collected over 47,000 images over 490 days. A semi-quantitative visual data analysis of cloud cover and auroral contamination was carried out by five individuals. The analysis shows that the night sky was free of cloud for 83 per cent of the time, which ranks Dome~A highly in a comparison with other observatory sites. Although aurorae were detected somewhere on an image for nearly 45 per cent of the time, the strongest auroral emission lines can be filtered out with customized filters.
