Beautiful color image of the Great Hercules Globular Cluster M13, obtained by Brad Wallis and Robert Provin. Exposed 20 minutes on (unhypered) Fujicolor Super G-800+. 155mm f/7 Astro-Physics EDF refractor.

Michael Purcell's image of M13, taken on September 9, 1995 at 20:26:16 with his Meade 10-inch f/6.3 SC Telescope and a ST7 CCD camera, exposed 17 seconds.

Frédéric Guinepain took this image of M13 in Hercules on June 9, 2002 from Place Gargenville (35km on the West of Paris - France), with a Celestron 8 on GPDx mount, and modified WebCam Philips VestPro. It was created from 20 frames of 20s + 10 frames of 40s + 10 frames of 60s.