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Sunday, February 5, 2012
At border of Perseus and Camelopardalis
Image in HST-palette from ionized elements, Red=Sulfur, Green=Hydrogen & Blue=Oxygen.
Click for a large image!
Image in visual spectrum
Narrow band channels combined to a visual spectrum, R=Hydrogen + Sulfur, G=Oxygen and
B=Oxygen + Hydrogen.
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels, curves, color and mosaic combine in PS CS3.
Optics, Canon EF 200mm camera lens at f1.8
Guiding, Meade LX200 GPS 12" and a Lodestar guider
Image Scale, ~5,5 arcseconds/pixel
Exposures, Baader 7nm H-a, 12x1800s + 15x1200s = 11h
O-III, binned down 3x3 1h. total exposure time12 hours.
Calibration with Darks, Flats and Bias frames.