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Taken on August 9, 2007 from my backyard in Castro Valley, Ca.
Stinger
450 Classical Cassegrain (18" f/12.6) 
Finger Lakes IMG1024S Dream Machine imaging camera operated at -30C
Lumicon Giant Easy Guider with Focal Reducer
SBIG ST7E guide camera
Robofocus
Finger Lakes CFW1 Filter wheel
Custom Scientific 4.5nm FWHM Ha filter (50mm diameter)
4 exposures of 20 minutes through Halpha filter
1 hour 20min total exposure time