Fig. 30: Amateur astronomers on the tank shooting place on Gurnigel during a star party. In the foreground is a large dobsonian. Visible on the horizon is the Gantrisch mountain chain with the light pollution of Thun. Single exposure of a timelapse movie.Nikon D3; Δt=30 s; f=17 mm; f/3.5; ISO 3200; 18 August 2012 22:54:59
