Messier 13; Diamants in the sky

Last night I couldn't get any sleep - lucky for me the sky was so clear - made it also very cold! I was able to add 20 more frames to the image of 2010. This stack is a total of 40 frames. The total exposure time is allmost 4 hours. NGC 6207 is visible at the top right part of the frame. Even a tiny galaxy called IC4617 is visible (lies between both objects).