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http://dx.doi.org/10.14191/Atmos.2018.28.3.317

Development of A Prototype Device to Capture Day/Night Cloud Images based on Whole-Sky Camera Using the Illumination Data  

Lee, Jaewon (Defense Intelligence Agency)
Park, Inchun (Nagoya University, Institute for Space-Earth Environmental Research)
cho, Jungho (Korea Astronomy and Space Science Institute)
Ki, GyunDo (Defense Intelligence Agency)
Kim, Young Chul (Hanseo University, Dept. of Flight Operation)
Publication Information
Atmosphere / v.28, no.3, 2018 , pp. 317-324 More about this Journal
Abstract
In this study, we review the ground-based whole-sky camera (WSC), which is developed to continuously capture day and night cloud images using the illumination data from a precision Lightmeter with a high temporal resolution. The WSC is combined with a precision Lightmeter developed in IYA (International Year of Astronomy) for analysis of an artificial light pollution at night and a DSLR camera equipped with a fish-eye lens widely applied in observational astronomy. The WSC is designed to adjust the shutter speed and ISO of the equipped camera according to illumination data in order to stably capture cloud images. And Raspberry Pi is applied to control automatically the related process of taking cloud and sky images every minute under various conditions depending on illumination data from Lightmeter for 24 hours. In addition, it is utilized to post-process and store the cloud images and to upload the data to web page in real time. Finally, we check the technical possibility of the method to observe the cloud distribution (cover, type, height) quantitatively and objectively by the optical system, through analysis of the captured cloud images from the developed device.
Keywords
Whole-sky camera; illumination data; Lightmeter; cloud image;
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