Orion constellation - H-alpha enhanced color
H-alpha enhanced Color image of the Orion constellation.
Details:-
Color - Date and Location - 2009-02-24 at La Ensenada resort in Costa Rica.
Modified Canon 350D with 17-50mm lens at 35mm focal length on astrotrack mount.
Exposure - 11 238s light frames, and 20 darks at ISO 800 and f/3.5 with 8 flats for calibration.
H-alpha - Date and location 2009-12-10 in Victoria backyard.
Conditions - -5 deg C and clear with no wind.
Equipment- modified Canon T1i with H-alpha filter and 28mm lens piggybacked on HEQ5 mount.
Exposure - 7- light and 2 dark frames at ISO 800 for 8 min each with flat and bias frames added for calibration.
Processing in ImagesPlus and Photoshop