NGC 4088 with supernova 2009dd (next to the center of the galaxy) (UMa)
Technical data: 15"f/8-Newtonian SBIG ST10XME with AO-7, AstronDon-filterset for colors LRGB (L=10x600s; R=5x600s; G=5x600s; B=6x600s; RGB bin2 Author: Volker Wendel
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