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Taken on August 9, 2008 from my ranch in Mariposa County, California
Halpha only
Astro-Physics AP180EDT f/9 imaging telescope used at f/9
AP1200GTO mount
AP80/900mm guide scope
FLI IMG6303E camera, operated at -35C
SBIG ST7ME guide camera
Custom Scientific Ha 50 mm round filter (4.5nm FWHM)
FLI CFW7
16 exposures of 10 minutes through Halpha filter
2 hours 40 minutes total exposure