NGC281 - The Pacman Nebula



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Found directly beneath the 'W' of Cassiopeia

STL11000 w 6nm Astronomic H-Alpha filter
AP155EDF Triplet Refractor w 4" Field Flattener and Robofocus
10 x 30 min self-guided on an AP900GTO mount
Acquired, Flats and Darks subtracted in CCDSoft5
Alignment and Sigma Reject combine in Maxim
Curves, Contrast Adjustment, Levels in PS CS4
Sharpening using a 1 pixel USM on the nebula only, stars and background masked
Noise Reduction via 0.5 pixel Gaussian Blur in PS CS4 on the background only

Flesherton, Ontario
Sept 2 2009

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