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To see this area in Halpha only, click
here: 
Stinger 450 Classical Cassegrain (18" f/12.6)
Taken on July 15, 16 and 17, 2006 from my backyard in Castro Valley, California
Lumicon Giant Easy Guider with Focal reducer for final: F= 3366mm, f/7.1
Finger Lakes CM10 MaxCam imaging camera operated at -26C
Robofocus
Finger Lakes CFW1 Filter wheel
SBIG ST7E guide camera
Custom Scientific 3nm FWHM Ha filter (50mm diameter)
Custom Scientific 3nm FWHM [SII] filter (50mm diameter)
Custom Scientific 3nm FWHM [OIII] filter (50mm diameter)
Six exposures of 30 minutes in Halpha
Six exposures of 30 minutes in [SII]
Eight exposures of 30 minutes in [OIII]
Ten hours total exposure time