Title: Alpha and Delta UMa and ultrafaint Flux Nebula between Optic: Canon EF200f2.8 at f/2.8 Filter: Baader 50mm LRGB Camera: SBIG STL11000M C2 at -25°C, selfguiding Exposures: L 35x4min (26 true L, 9 xL from RGB); RGB 36:36:36min, subexposure 4min, total 3,5h 29x Darks, 108x Bias, 41x Flat Location: Kreben, Germany Date: 2015-04-18 Processing Pixinsight: Image Calibration, CosmeticCorrection, StarAlignment, Image Integration, DBE, ChannelCombination, MaskedStretch L and RGB, HistogramTransformation, LRGBCombination, CurvesTransformation, MT, all with 64bit Float PS: StarRemoval (J.P. Metsavainio), remove of alpha and delta UMa, Levels, Curves, DustandScratchesFilter, Levels, ColorSaturation, Blend of the Stars, (masked) |