|Fürstein 360 Panorama v2 by Martin Würzer is available|
under a CC BY-NC-SA license
He took the photo on New Year's Day 2017 around 8 pm, from the peak of the Fürstein. The light from Milan is visible at the far left. It's an amazing photo, and you can see it in full resolution by clicking on the name of the photo in the caption above.
Martin also sent me this image, which shows where at least some of that waste light is coming from:
|Illuminated facade by Martin Würzer is available under a|
Creative Commons Attribution 4.0 International License..
That photo was taken shortly before 3 am! There is some good news associated with this photo, however. By having a polite discussion with the architect and the firm that owns the building, Martin convinced them to remove the light that illuminates the facade, and to also improve the other lamps so that they produce less skyglow. Great job Martin!
For Swiss and other German speaking readers, Martin provided two useful references: