Light Pollution and the Palomar Observatory
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Description: Discussion of light pollution from an astronomy perspective, with many links.
Light Pollution and the Palomar Observatory Milky Way over Palomar photo by Wally Pacholka of What is Light pollution? Light pollution is any adverse effect of light caused by society. Light pollution is an increasing problem for observatories everywhere. One of the reasons Palomar Mountain was selected as the site for the 200-inch telescope was its dark skies that would allow observation of the faintest galaxies without the interference of city lights. Since 1934, rapid urbanization of southern California has resulted in a significant increase in the amount of sky glow. If such light pollution continues to increase, it will seriously reduce the effectiveness of the Palomar Observatory for many types of research.
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