The Hercules Globular Cluster
M13
by Bob and Janice Fera
Officina
Stellare RC-360AST 14" f/8 Ritchey Chretien Cassegrain
with two-element field flattener
Apogee Alta U16M CCD Camera
Astrodon Filters
LRGB Composite - 280:75:75:75 minutes
Sub Exposures: 15m
Image acquired with CCDAutopilot
Processed in CCDstack and Adobe Photoshop
Taken May 18, 20, 2012 from Eagle Ridge Observatory, Foresthill, CA
Best viewed with a color managed browser such as Firefox 3.6 or higher