Total Sky Imager observations during POLARSTERN cruise ANT-XXV/5 on 2009-04-15 with links to images

Dataset consists of total sky images taken every 15 seconds during daytime. The imager was mounted at the top of the bridge of the Research Vessel POLARSTERN. Each file is a jpg-image and all the necessary information on the aperture or exposition is written in the jpg-header.本数据集包含日间每15秒采集的全部天空图像。该成像设备安装于极星号（POLARSTERN）研究船的舰桥顶部。每个文件均为JPG（JPEG）图像，所有与光圈、曝光相关的必要信息均存储于该图像的文件头内。