Had some problems with intermittent clouds. Guiding was pretty good, but I was not very discriminating in selecting subs because this object is diffuse and dim. I didn't use the focal reducer for this one because it framed better this way.
In the revision, used StarTools with extensive Develop, HDR
ptimize, Color:Saturation, Life:Moderate. In CS6, Astronomy Tools Star Color Enhance, GradientXTerminator (course), background darkened with Gaussian blurred layer mask.
Date: 17 Jul 2012
Subject: NGC 6946, Fireworks Galaxy
Scope: AT8IN
Filter: none
Mount: CG-5 (Synta motors)
Guiding: Orion ST80 + 0.5x Antares telereducer + DSI Ic + PHD
Camera: DSI IIc
Acquisition: Nebulosity 3.0.8
Exposure: 40x300 s
Stacking: Neb 3, bias included, normalize first, trans+rot align, 1.5 SD stack
Processing: Just crop & color balance in N3, the use CS5 curves & levels, a little unsharp mask. In one layer use Astronomy Tools color blotch, deep space, & space noise reduction. Gaussian blur layer mask the unsmoothed layer on top of the smoothed one. Flatten, star color enhance, and saturation boost.
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