RGB:Canon 350D Hap Griffin Baader Mod30x180sec at iso 1600
Celestron 9.25 reduced 0.63
October 28, 2008Hydrogen Alpha
Meade DSI Pro 2 Mono15x300secDarks/Flats AppliedMeade SN8 Reflector
Baader 1.25" 7nm H alpha filter
November 23, 2008 Sky and Telescope Online Gallery March 27, 2009
This is a collaborative effort with Ted Rafferty adding his Hydrogen Alpha data
to my RGB data to make, what I think, is a far superior image.
The two sets of data were registered and aligned in DeepSkyStacker and combined in Photoshop CS3.
The combine method used is one described by Russell Croman
. Layer masks were used to keep star colors true while allowing the Ha and RGB to combine in a way to optimize the nebula's appearance.