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Open AccessArticle

Light Pollution Monitoring and Sky Colours

1
Department of Physics, Eötvös Loránd University (ELTE) BDPK, 9700 Szombathely, Hungary
2
Hungarian Meteorological Service, 1024 Budapest, Hungary
*
Author to whom correspondence should be addressed.
J. Imaging 2020, 6(10), 104; https://doi.org/10.3390/jimaging6100104
Received: 30 June 2020 / Revised: 26 September 2020 / Accepted: 29 September 2020 / Published: 5 October 2020
The measurement of night sky quality has become an important task in nature conservation. The primary device used for this task can be a calibrated digital camera. In addition, colour information can be derived from sky photography. In this paper, we provide a test on a concept to gather information about the possible sources of night sky brightness based on digital camera images. This method helps to understand changes in night sky quality due to natural and artificial changes in the environment. We demonstrate that a well-defined colour–colour diagram can differentiate between the different natural and artificial sources of night sky radiance. The colour information can be essential when interpreting long-term evolution of light pollution measurements. View Full-Text
Keywords: light pollution; imaging radiometry; colorimetry light pollution; imaging radiometry; colorimetry
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Kolláth, Z.; Száz, D.; Kolláth, K.; Tong, K.P. Light Pollution Monitoring and Sky Colours. J. Imaging 2020, 6, 104.

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