Differential Photometry Study of the European Light Emission to the Space

摘要: In the comparison of light pollution between two countries, there are some difficulties because geographical, cultural and economical differences. The trouble is even worse considering all different systems outdoor lighting. As first step, to contrast a group close nations have been chosen with population densities, size, built surface, etc. parameter compare emission each country, NOAA’s images (DMSP Satellite, OLS “VIS” band 0.40-1.10 um) flux were used NASA’s software World Wind employed solve distortion problem Mercator projection. This allow draw frontiers over so it possible make particular study them. these illuminated regions saturated, number counts don’t represent emitted from that region, although proportional region’s area. known area country calculate density per person proportion territory. These parameters aspect space. very influenced by population’s density, interesting other as urban street lamp density. etc. In this we show conclusions roots differences found countries’ illumination.