NGC 3718, NGC 3728 and Hickson 56

Date: 2009/04/21 Place: Ondrejov Lens: N150/750 + Paracorr Exposition: Atik 314L, Astronomic Type II, LRGB=66:18:18:30min Mount: Losmandy G8, Orion Starshoot Guider on AT1010 Image processing: light curve in PixInsight LE L-channel