Donautal at Night

Stiegelesfelsen, Fridingen, Swabian Jura, 760 m

Date:	22.11.2025	Time:	20:48 CET
Exposure:	9 x 13 s, 10 x 40 s	Field of view:	360° x 180°
Camera:	Lumix S5IIX	Optics:	18 mm f/1.8 and f/2.5
Place:	Fridingen, Swabian Jura, Germany	Photo:	Till Credner

The brightness in the zenith was 20.96 mag/arcsec² at the time of the above photography, 20:48 CET, 22.11.2025. The darkest measured value was 21.03 mag/arcsec² at 22:13 CET, however, the measurement ended at this time. 21.03 mag/arcsec² is still a factor of 2.44 brighter than a natural dark night sky due to the light pollution by Fridingen closeby, Neuhausen ob Eck and the cities of Balingen, Albstadt and Stuttgart in the northern direction. Measurements were obtained with SQM-LU-DL, serial number 2030.