Measurement of obtrusive light in terms of Czech Republic

Abstract

Obtrusive light (light pollution) refers to both the night sky luminance as well as any light that radiates to the places where it is not required. Moreover, this kind of light increases the energy losses. The measurements are done for the purpose of obtaining information about night sky luminance at different meteorological situations and in different locations. We want to know influence of the artificial light sources on the night sky luminance. Outputs from the measurements are used to verify the physical model of the night sky. The aim of this model is to find out how the artificial light sources (public lighting, or whole cities) are capable to influence the sky luminance at different distances and under different meteorological conditions. The future of this model is to compare influences of the new artificial outdoor lighting systems to the night sky luminance in the project phase.