Tuesday, Apr 29, 2025

NGC 4151 and NGC 4145 are a spectacular pair of galaxies in the constellation Canes Venatici! Thanks to an extended period of clear weather here in northern Germany, I was able to capture these galaxies over the course of nine nights. After generously filtering the data, I was left with nearly 37 hours of material for processing – consisting of luminance, RGB, and H-alpha exposures (RGB taken at 750 mm f/3.75 with the Starizona Nexus, luminance and H-alpha at 1000 mm f/5). In the image, many smaller galaxies can also be spotted (including NGC 4156 with a tidal stream towards PGC 2151005)!