I took this a little while ago.
Ha O111 S11 LRGB image of the Omega Nebula with a CDK17 and FLI ML16.
It took a while to process and I would leave it and come back to it.
http://www.pbase.com/image/167992066/large regular size
http://www.pbase.com/image/167992066/original large size image.
Also the Ha only image:
http://www.pbase.com/gregbradley/image/167917601/large
Greg.