NGC 281
H alpha - RGB

RGB August 19-24

Ha - RGB August 19-24 September, 23, 2003

Hubble Mix (S II - H alpha - OIII) September 23-26, 2003

Ha - OIII - OIII September, 23-26, 2003

Ha - OIII - SII September 23-26, 2003

Date: August 19-24, September, 23, 2003
Instrument: 155mm Astro-Physics f7 Starfire w/Astro-Physics 1200 Mount
Imaged with SBIG ST2000XM Camera w/CFW8A Filter Wheel
Exposure: HaRGB
82.5 Min Red (2X2), 55 Min Green (2X2 binning) and 55 Min Blue (2X2 binning)
7.5:5:5 minute sub-exposures ( @ f7 )
120 Min H-alpha (unbinned) for Luminance Channel Sharpened Using Richardson-Lucy Routine in CCD Soft
30 minute sub-exposures ( @ f5.25 )
Sub-Images Aligned in Picture Window Pro and Combined in CCD Soft
Color Combine in CCD Soft
Gamma Stretch in MaxIM DL
Cropping in Picture Window Pro
Curves applied in PhotoShop 7.0
Location: My Light Polluted Driveway in Mason, OH - 75 Feet From VERY Unshielded Mercury Vapor Lamp

Guiding:
94 mm f7 Brandon with SBIG ST4 for H-alpha Exposure
Self Guided with internal Guider Chip for RGB Exposures

Filter Data:
H Alpha Custom Scientific 656.3 / 4.5nm
Standard SBIG RGB Filter Set