The Great Orion Nebula (M42 & M43)
SII - G - B

Ha - OIII - B

Ha - OIII - OIII

Hubble Mix (S II - H alpha - OIII)

SII - G - B

Ha - G - B

Date: October 19, 2003
Instrument: 155mm Astro-Physics f7 Starfire @f5.25 w/Astro-Physics 1200 Mount
Imaged with SBIG ST2000XM Camera w/CFW8A Filter Wheel
Exposure: RGB
20 Min SII on Red Channel, 1.25 Min Green on Green Channel, 1.25 Min Blue on Blue Channel
Sub-exposures were 1 Minute on SII, 15 seconds on Green and Blue
All Exposures Unbinned
Sub-Images Aligned and Combined in CCD Soft
Color Combine in CCD Soft
Gamma Stretch and Background Subtraction with Pixel Math in MaxIM DL
Slight Color Adjustment and in Picture Window Pro
Curves applied in PhotoShop 7.0
Location: My Light Polluted Driveway in Mason, OH

Guiding:
94 mm f7 Brandon with SBIG ST4

Filter Data:
H Alpha Custom Scientific 656.3 / 4.5nm
O III Custom Scientific 500.7 / 3nm
S II Custom Scientific 672.4 / 4.5nm
Green and Blue Filters From SBIG Standard Set