Two galaxies caught in a gravitational collision. M51 is 37 million light-years away! Taken through a Celestron 11in telescope @ F/4 (FL=1120mm). Exp.time: 33 x 5min = 2:45min @ ISO800... Calibrated (Dark Subtraction) in ImagesPlus using Monocrome Bayer CFA. Photoshop for enhancements. www.RobsAstroImaging.com