Image spcefications:
- Exposure: 8,5 hours, HaLRGB = 300:120:30:30:30 minutes
- Camera: SBIG ST-8300M, Temp -35 ° C, Astrodon 5nm Ha filter, 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: Etoile St. Cyrice, France
- Sky Quality Meter: Between 20,92 and 21,31
- Ambient temperature: -3° C and -6° C
- Date: 17 and 18 Januari 2012
Image acquisition with ImagesPlus 4.0 Camera Control with dither:
- 15 H-alpha of 20 min, binned 1x1
- 12 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
- ImageIntegration, ImageCalibration, StarAlignment, ChannelCombination
- ColorCalibration, BackgroundNeutralization, HistogramTransformation
- ACDNR, CurvesTransformation, LRGBCombination, SCNR
Processing in Photoshop CS3:
- Combine Ha and LRGB (Split LRGB and Combine R and Ha in blend mode lighten)
- Levels, Curves
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