M-52 (NGC-7654) is the brightest open star cluster in the constellation of Cassiopiea, located on the western edge of the constellaton. It is large, rich, fairly compressed, and contains over 120 stars ranging from 9th down to 12th magnitude. It lies approximately 3000 light years from Earth and is about 18 light years in diameter. It was discovered by Charles Messier in 1774, and added to his catalog as the 52nd object.
This image, acquired on August 13, 2014, is a 1 hour integration of 6 minute exposures through the Celestron C-11 at f/2, using the HyperStar III imaging system and the Starlight Express SXVR-H694C color CCD camera, operating at -10 degrees below ambient temperature and binned 1 X 1. Guided, captured and combined using Maxim DL5 Pro. Post processed using PhotoShop CS2, Gradient XTerminator, StarShrink, Carboni's Astro Tools and NoiseWare.