Panoramic View from Hohenurach

Bad Urach, Swabian Jura, Southern Germany, 692 m

Date:	02.07.2021	Time:	23:08 UT (CET-1h)
Exposure:	21 x 20s	Field of view:	360^o x 180^o
Camera:	Canon EOS1D IV at ISO 1600	Optics:	15mm, f/2.8
Place:	Bad Urach, Southern Germany	Author:	Till Credner

The brightness in the zenith was down to 20.7 mag per arcsecond² at about 23:30 CET, 02.07.2021. Due to cirrus clouds the brightness varied and went up to about 20 mag per arcsecond². 20.7 mag per arcsecond² is 3.3 times more bright than the natural clear and moonless sky due to light pollution. Therefore the sky is brightened by 230 %. Measurements were obtained with SQM-LU-DL, serial number 2030. The sky brightness from the city center of Heilbronn is plotted for comparison.

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