This image was selected to National Geographics "Daily Dozen"
http://astroanarchy.blogspot.com/2009/09/ngc-6888-in-national-geographics-daily.html FULL SIZE:
http://astroanarchy.zenfolio.com/img/v3/p812648364.jpgCamera QHY9,
Optics Meade LX200 GPS 12" forced to @ f4.65
Guiding with SXV-AO active optics unit 11Hz
Filters
Baader H-alpha 7nm, 4.5h 20min subs
Baader O-III 8,5nm 2h 40min 20min subs binned 2x2
S-II 1h 5 min subs binned 3x3
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Note. a special technique of mine is used to balance weaker channels with Hydrogen alpha.
Information about that tech. can be found
HERE