M52 Stacked Image Posted on September 6, 2013 by kbrown928 Image of M52 made by stacking 10 x 30 secs shots through a Skywatcher 150mm f/8 refracting telescope on 20 August 2013, taken at Brickfield Observatory by Ivan Walton and Ted Pearson. M52 20 Aug 13 (stacked image)