Image spcefications:
- Exposure: 8 hours, HaLRGB = 180:210:30:30:30 minutes
- Camera: SBIG ST-8300M, Temp -15 ° C, Baader LRGB filters
- Instrument: TEC 140 with field flattener, focal distance 980 mm
- Mount: Losmandy G11
- Guiding: TS Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
- Location: Puimichel, France
- Sky Quality Meter: between 21.10 and 21,21
- Temperature Ambient: between 20° C and 24° C
- Date: 22, 23 and 24 august 2011 (LRGB), 14 and 16 august 2012
Image acquisition with ImagesPlus 4.0 Camera Control (all at -15° C) with dither:
- 9 H-alpha of 20 min, binned 1x1
- 21 Luminance of 10 min, binned 1x1
- 6 Red + 6 Green + 6 Blue of 5 min, binned 2x2
- 20 Flat fields per channel with Aurora Flatfield panel
At home, camera in fridge:
- 20 Dark frames of 20 min + 20 Dark frames of 10 min + 20 Dark frames of 5 min
- 20 Flat darks (per channel) + 20 Bias frames
Processing in PixInsight 1.7
- ImageCalibration, ImageIntegration, StarAlignment, ChannelCombination
- BackgroundNeutralization, ColorCalibration, HistogramTransformation
- LRGBCombination, ACDNR, CurvesTransformation, SCNR
- HDRMultiScaleTransform, PixelMath
- Ha and RGB combined with method Vincent Paris
Processing in Photoshop CS3:
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