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| Title: Gum12, Gum15 and Pencil Nebula NGC2736 in Vela Optic: Canon EF200f2.8 at f/2.8 Filter: Baader 50mm LRGB Camera: SBIG STL11000M C2 at -20°C, selfguiding Exposures: Ha 13x8min, earlier darks and bias used RGB 24:24:24min, subexposure 4min, 26x Darks, 51x Bias, 59x Sky Flat Location: Saharasky, Marocco Date: 2013-12-03, 2013-12-05 Preprocessing Pixinsight: Image Calibration, CosmeticCorrection, StarAlignment, Image Integration, RGB STF-Stretching, Ha masked stretch script, Ha(RGB) Script PS: color enhancement, remove gradients, histogram, curves, minimum filter, cosmetic correction on Rigel |
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