Hydrogen Alpha only
Click image for medium resolution, click here for larger, for highest resolution, click here
To see this as a tricolor narrowband emission line filtered color image click here
Taken on August 27 and 28, 2004 from my backyard in Castro Valley, California
Takahashi FSQ106 f/5 (F=530mm) imaging scope
Finger Lakes IMG6303E imaging camera at -35C
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
12 exposures of 10 minutes at each of two aiming sites
four hours total exposure time