Title: Light pollution near the astronomical observatories
Authors: M. Kocifaj
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Description: A growth of light pollution is continuously identified, especially in densely populated regions in the United States or Europe. As a consequence the observational conditions may dramatically degrade even if there is no one important light source near the astronomical observatory. This is because of quasi-uniform distribution of light sources across the large territory. We have analyzed the effect of two most typical light sources with distinct radiative patterns - Garstang‘s-like source with preferred emission to low elevation angles, and cosine-like source with directionally independent luminance. It has been shown that cosine-like sources contribute to the light pollution effects negligibly if their distances are not below 10 km. Contrary, the Garstang’s-like sources may be important even if situated more than 40 km from the measuring point. In addition, the sky radiances in nominal spectral lines of UBV (or UBVRI) system can markedly vary with microphysical characteristics of airborne aerosol particles.
Reference: Mon. Not. R. Astron. Soc. 415, 3609-3615 (2011)
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Date and Time: 22.3. 2018 03:03:45 CET
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