Click image for medium resolution, click here for larger, for highest resolution, click here
Click image for medium resolution, click here for larger, for highest resolution, click here
Taken on September 10, 13, 14, 2004 from my backyard in Castro Valley, California
Takahashi FSQ106 f/5 (F=530mm) imaging scope
Finger Lakes IMG6303E imaging camera at -37C
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)
[Sulfur II] 673.4nm 3nm FWHM
Hydrogen alpha 656.3nm 3nm FWHM
[Oxygen III] 500.7nm 3nm FWHM
twelve exposures of 20 minutes for [SII], Ha and [OIII]
twelve hours total exposure time