M13, the Great Hercules Cluster


(Click on image for full size version)


Exposure Data: 6/8/2006.  RGB: 5x10m, 5x10m, 5x10m, 1x1. -15C, 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, Apogee Alta U16M/FLI CFW-7 CCD camera, AstroDon filters, Paramount ME, dithered 3 pixels, off-axis guided with SBIG ST-402ME.
Comments: FOV is over 0.5 on a side, even though sub-framed to 3402 x 3402 pixels!  Here is a link to the same target with the same scope but smaller image with a KAF-6303E sensor.