Fig. 19: Comet C/2020 F3 Neowise - post-processing 20 July 2023 as an exercise with PixInsight and Photoshop. PixInsight: Calibrate bias, dark, flat frames, align approx. 100 images to comet nucleus, integrate, adjust histogram, extract dynamic background. Photoshop: Fine tune highlights, shadows, colours, noise. Nikon D850 with Nikkor 300mm 2.8D at f/2.8, Ibergeregg, Switzerland 20 July 2020.
