Click on image to enlarge
Halpha = Red, [OIII] = Green, [SII] = Blue
Taken December 27, 2003 from my backyard in Castro Valley, Ca.
C14 imaging scope @4430mm focal length (f/12.46) stabilized with mirror locks
FLI IMG1024S imaging camera @ -40C
SBIG AO7 Adaptive Optics System
SBIG ST7E Guide/AO control camera @-20C
RCOS Dichroic Beam Splitter for AO7/IMG compatibility
FLI CFW 1 filter wheel
Custom Scientific Narrowband Emission Line Filter
[Sulfur II] 672.4nm 3nm FWHM
Hydrogen alpha 656.3nm 3nm FWHM
[Oxygen III] 500.7nm 3nm FWHM
Exposure details:
3 exposures of 15 minutes for [SII], [OIII], Halpha
Maxim DL used for IMG1024S control
CCDSOFT 5.00.71 used for AO7/ST7E control
Sigma prebeta 11 used for darks, flats, biases and light combine
Photoshop CS used for final touch up