Abell 2151 - The Hercules Galaxy Cluster
by Bob and Janice Fera
Parallax Instruments 12.5" f/9 Ritchey Chretien
Yankee Robotics Trifid-2 6303E
180 minute exposure
30-minute sub-exposures
CCDstack, MaxIm/DL with RC-Astro plugin and Adobe Photoshop
Taken May 30, 2006 from Eagle Ridge Observatory, Foresthill, CA