6 x 30 minutes Halpha, 4 x 30 minutes [OIII] under very good seeing
Red = Halpha
Green = [OIII]
Blue = [OIII] + 0.2 * Halpha (to simulate Hbeta emission)
click image to enlarge, click here for highest resolution
Taken on August 12 & 14, 2006 from my backyard in Castro Valley, Ca
To
see this image in [NII], Halpha and [OIII] click here 
Stinger 450 Classical Cassegrain (18" f/12.6)
Lumicon Giant Easy Guider with Focal reducer for final: F= 3366mm, f/7.1
Finger Lakes CM10 MaxCam imaging camera operated at -20C
Robofocus
Finger Lakes CFW1 Filter wheel
SBIG ST7E guide camera
Custom Scientific 3nm FWHM Ha filter (50mm diameter)
Custom Scientific 3nm FWHM [OIII] filter (50mm diameter)
Six exposures of 30 minutes through Halpha
four exposures of 30 minutes through [OIII]
Five half hours total exposure time