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Taken July 18, 2008 from my backyard in Castro Valley, California
"Scope City"
Pentax 6x7 Takumar 400 mm F/4 lens used at F/4
AP1200GTO mount
AP80/900mm guide scope
FLI Proline 3200 camera (eng grade sensor), operated at -40C no RBI Annhilator used (slow download mode)
SBIG ST7ME guide camera
Custom Scientific 4.5 nm Ha 50 mm round filter
FLI CFW7 filter wheel
12 exposures of 10 minutes through Halpha filter
2 hours total exposure