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Panoramic View from Feldberg

Black Forest, Germany, 1493 m

Date:29.01.2023 Time:4:45 UT
Exposure:10 x 15 s and 11 x 30 s downward Field of view:360o x 180o
Camera:Canon EOS1D IV at ISO 3200 Optics:15 mm, f/2.8 and f/4.0 downward
Black Forest, Germany
Author:Till Credner

It was a chilly cold night with -10 degrees Celsius. Dense fog covered the mountain until about 5:30 CET. But as promised, the clouds settled a bit and the peak of Feldberg set free. The brightness in the zenith was down to 21.33 mag per arcsecond2 at about 5:45 CET, 29.01.2023. This is 1.85 times more bright than the natural clear and moonless sky due to light pollution. Therefore the sky is brightened by 85 % by the lights of Strasbourg, Mulhouse, Basel, Zürich, Freiburg and the weather stations close by. Measurements were obtained with SQM-LU-DL, serial number 2030.

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