The night sky brightness at Potsdam-Babelsberg ranges from 16.5 to 20.3 mag/arcsec². The latter (best) value corresponds to 4.7 times... Read More
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The night sky brightness at Potsdam-Babelsberg ranges from 16.5 to 20.3 mag/arcsec². The latter (best) value corresponds to 4.7 times... Read More