Panoramic View from Ittenhausen

Swabian Jura, Southern Germany, 790 m

Date:	22.07.2023	Time:	23:19 UT (CET-1h)
Exposure:	21 x 20s	Field of view:	360^o x 180^o
Camera:	Canon EOS1D IV at ISO 3200	Optics:	15mm, f/2.8
Place:	Langenenslingen-Ittenhausen, Southern Germany	Author:	Till Credner

The brightness in the zenith was down to 21.24 mag per arcsecond² at about 00:19 CET, 23.07.2023. 21.24 mag per arcsecond² is about two times more bright than the natural clear and moonless sky. This is due to light pollution and the milky way in the zenith at this time. Another unusual strong source of light was airglow during this night, here seen as green diffuse patterns in the sky. Two times more bright means the sky is brightened by 100 %. Measurements were obtained with SQM-LU-DL, serial number 2030. Strongest sources of light pollution are the cities of Stuttgart and Ulm, about 60 and 50 km distant, respectively.