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Taken on June 4, 2004 from Fremont Peak State Park, San Juan Bautista, California
AP180EDT f/9 imaging scope used (first light for deep sky)
AP80/900mm guide scope
AP1200GTO mount
SBIG ST10XME imaging camera @-20C
FLI CFW1 Filter wheel
FLI DF2 Digital Focuser
ST7E guide camera @ -15C
Custom Scientific Ha filter 656.3nm/3nm FWHM
Six exposures of 600 seconds (2x2 binned): one hour total exposure time