How many stars are in the sky
N.N.Samus, "Starry" swindle. Novaya Gazeta, "Centaurus" Supplement No.9, 2008
"Recently, Vladimir Surdin, the Moscow astronomer and famous science popularizer asked the group of children in a school, how many stars one can see on the sky with the naked eye? True answer is known: about 6000 stars, half of them above the horizon and half below it. There are two or three widely-read children who knew the answer. But the majority think that one can descern with the naked eye only dozen stars, at least hundred ones. And this was true answer, too, because it is hard to see even the moon from a big city filled by light, what to say about faint stars, clusters, nebulae and comets".
Sources of night sky pollution in SAO
Night sky spectrum of the Special Astrophysical Observatory.
Observations of relative intensities of HgI and NaI emission lines
Characteristics of interference due to light pollution at the SAO observational sight.
Light pollution sources-1.
Light pollution sources-2.
Results and conclusions.
Continued. Monitoring the situation.
THE WATER-BOTTLING PLANT IS STARTED-UP IN THE CENTER OF LIGHT-PROTECTED ZONE OF 6-METER TELESCOPE.