Image spcefications:
- Exposure: 8,7 hours, LRGB = 250:95:95:95 minutes
- Camera: ZWO ASI2600MM, Temp -10 ° C, Baader RGB filters
- Instrument: TEC 140 with field flattener, focal distance 980 mm
- Mount: Paramount MX+
- Guiding: TS Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
- Location: Etoile St. Cyrice, France and Wateren, Netherlands, Nozières France
- Sky Quality Meter: 21,31
- Ambient temperature: 6° C
- Date: 23 August 2012, 18 September and 12 October 2015, 31 December 2024
Image acquisition with ImagesPlus 4.0 Camera Control with dither:
- 25 Luminance of 10 min, binned 1x1
- 19 Red + 19 Green + 19 Blue of 5 min, binned 1x1
- 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
Processed with PixInsight 1.9.1:
Lineair:
- ImageCalibration, CosmeticCorrection and StarAlignment
- ImageIntegration and ChannelCombination RGB
- GradiantCorrection on Lum and RGB
- ImageSolver and SPCC on RGB
- BlurXTerminator on Lum and RGB
Non Lineair:
- HistogramTransformation on Lum and RGB
- NoiseXTerminator on Lum and RGB
- Create StarImage of RGB with StarXTerminator
- LRGBCombination
- StarXTerminator on Ha and LRGB
- CurvesTransformation, SCNR, MultiscaleLineairTransform on starless LRGB
- PixelMath to put together: StarlessImage + StarImage
- In Photoshop: make background sky dark (25:25:25) with Levels
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