Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-10-20
Astronomy and Astrophysics
Astrophysics
8 pages, 6 PostScript figures, paspconf.sty, to appear in IAU-UN Symposium 196 "The Protection of the Astronomical Sky"
Scientific paper
We present the map of the artificial sky brightness in Europe in V band with a resolution of approximately 1 km. The aim is to understand the state of night sky pollution in Europe, to quantify the present situation and to allow future monitoring of trends. The artificial sky brightness in each site at a given position on the sky is obtained by integration of the contributions produced by every surface area in the surroundings of the site. Each contribution is computed taking into account based on detailed models the propagation in the atmosphere of the upward light flux emitted by the area and measured by the Operational Linescan System of DMSP satellites. The modelling technique, introduced and developed by Garstang and also applied by Cinzano, takes into account the extinction along light paths, a double scattering of light from atmospheric molecules and aerosols, Earth curvature and allows to associate the predictions to the aerosol content of the atmosphere.
Baugh K. E.
Cinzano Pierantonio
Elvidge Christopher D.
Falchi Fabio
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