M13, the Great Hercules Cluster


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Exposure Data: 5/7/2006.  RGB: 5x10m, 6x10m, 6x10m,. -25C, 0.55 arc-sec./pixel.
Processing: Acquired via CCDAutoPilot 3 and CCDSoft, reduced, aligned, combined and RGB combine in CCDStack.  Curves, levels, LAB and other processing in Photoshop.

Optical System: 14.5 Ritchey-Chretien @ F/9 w/FFC, IMG6303E/CFW-7 CCD camera, AstroDon filters, Paramount ME, dithered 3 pixels, off-axis guided .
Comments: Average seeing was 1.8 arc-sec.