M13
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

 

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