M13, the large globular cluster in Hercules. A compsoite of
thirty one 1 minute exposures, ISO1600. Scope is a Meade
Schmidt Newtonian barlowed 1.5X for a FL of 1200mm at F6.
Processing with Deep Sky Stacker and Photoshop. Compare
to my previous image of M13 nearly two years ago here.
Hazeldale Observatory Astronomy