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Taken on September 23, 2004 from my backyard in Castro Valley, California
Takahashi FSQ106 f/5 (F=530mm) imaging scope
SBIG ST10XME imaging camera at -26C
AP80/900MM guide scope
SBIG ST7E guide camera at -15C
Finger Lakes CFW1 filter wheel
AP900GTO mount
Finger Lakes DF2 Focuser
Custom Scientific 50mm Narrowband Emission Line filters (AR Coated)
Hydrogen alpha 656.3nm 3nm FWHM
9 exposures of 30 minutes through Halpha filter
4.5 hours total exposure time