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M1 Crab Nebula
LX90 GPS 8" f/6.3 DSI-C
34x60sec Alt-Az unguided
collected 12/8/07 Envisage 4
aligned and stacked 12/27/07 in AIP4WIN
RC slow deconvolution
Photoshop CS2 1/19/08 levels, color balance, saturation
hipass nebula, Carboni "Lighten DSO & Reduce Stars",
"Local Contrast Enhancement", "Deep Space Bkgrd Noise Reduction"
curves to color balance and increase contrast, crop bottom edge
median filter outside nebula, some star repair
final levels, color balance, intentionally reducing green
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