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Taken on Aug 24 and 25, 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)
10 exposures of 20 minutes through Halpha filter
3 hours 20 minutes total exposure time
processed using the resolution enhancement method