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(Click to enlarge)
This image © Copyright 2008, Michael Fulbright

I combined the unbinned RGB frames into an L frame. One this frame I ran maximum entropy, followed by a mild unsharp mask. I then used a DDP filter with a low threshold and filter. Then I combined the LRGB frames together in AstroArt 3.0. Finally I used PhotoShop to adjust the levels.

This compares nicely to the M13 wideshot in Sky&Telescope, July 2003 pg 117. You can even see the 16 magnitude galaxy IC4617 just barely.

Acquisition Details:
Date: 6/24/2003
Exposure: RGB: 30 minutes each
Telescope: Tak Sky 90 (500mm)
Mount: Vixen GP/DX
Camera: SXV-H9