Fig. 47: Stack of 50 x 120s at ISO 1600,15 dark frames, 15 flat frames. Nikon D3 and Nikkor 24-70mm 2.8G at f/4, guided with SkyWatcher StarAdventurer Pro. Stacking with Starry Sky Stacker, post processing with Photoshop. Friday, 18 September 2020 on Glaubenberg Pass, Switzerland. Picture in full resolution. Nikon D3; Δt=120 s; f=50 mm; f/4.0; ISO 1600; 18 September 2020 21:26:05
