Title: M42 wide field
Optic: Skywatcher Esprit 100/550 Refractor
Flatner: Skywatcher Esprit 100/550 Flattner
Filter: Baader 50mm LRGB
Camera: SBIG STL11000M C2 at -25°C, capture with Nebulosity3
Mount: Skywatcher AZ-EQ6-GT
Guiding: 50mm Finder, ASI120MM, openPHD2, DitherHigh, scale 3
Exposures: L 34x4min (25 true L, 9x from RGB);
RGB 56:52:48min, subexposure 4min
RGB 125:125:125sec, subexposure 25s
29x Darks, 180x Bias, 42x Flat (green), 41x Flat (L)
Date1: 2015-02-20, Vockenroth, Germany, RGB Frames
Date2: 2015-03-09, Defersdorf, Germany, L-Frames
Image Calibration, CosmeticCorrection, StarAlignment, Image Integration, ChannelCombination, DBE, STF-Stretching, Drizzle Integration for L, 2x Resample for RGB, L-RGB Combination, HDRMT
Blending of the Huygens-Region with 125s Image, masked denoise, Dynamic, Levels, HighPass Sharping
SCNR to green, DSE Script, 3x StarMask, masks combining with PixelMath, multi MT and MMT for star removal
Shadows and Highlights, denoise, masked Hue and Saturation, Levels, Dynamic, masked SelectiveColor, masked Highpass Sharping, blending of stars, mixing of two versions of this image, masked HighpassSharping, repair of a reflex
Original: only RGB from date1
Version B: LRGB with workflow as stated above
Version C: Stars removed with MT and MMT
Final: LRGB with workflow as above but something harder
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