Image spcefications:
- Exposure: 7 hours, LRGB = 290:45:45:50 minutes
- Camera: SBIG ST-8300M, Temp -15 ° C, Baader RGB 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 21,45 and 21,49
- Ambient temperature: between 21° C and 17° C
- Date: 20, 21 and 23 august 2012
Image acquisition with ImagesPlus 4.0 Camera Control with dither:
- 29 Luminance of 10 min, binned 1x1
- 9 Red + 9 Green + 10 Blue of 5 min, binned 2x2
- 20 Flat fields per channel with Aurora Flatfield panel
At home, camera in fridge:
- 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
- ATrousWaveletTransform, PixelMath
- Multiscale processing technique based on article in AstroPhotoInsight nov-dec 2011
Processing in Photoshop CS3:
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