Image spcefications:
- Exposure: 3,5 hours, LRGB = 120:30:30:30
- Camera: ZWO ASI2600MM, Temp -10 ° C, Baader LRGB filters
- Instrument: TEC 140, focal distance 980 mm
- Mount: Paramount MX+
- Guiding: TS Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
- Location: Nozières, France
- Ambient temperature: round 2° C
- Date: Luminance 5 March 2025, RGB 1 April 2025
- © Frans Kroon, Arno-MarkBlesgraaf
Image acquisition Sequence Generator Pro:
- 12 Lum of 10 min, binned 1x1
- 6 Red + 6 Green + 6 Blue of 5 min, binned 1x1
- 25 Flat fields per channel with Flatfield panel
- 20 Dark frames of 20 min + 20 Dark frames of 10 min + 20 Dark frames of 5 min + 50 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
- LRGBCombination
- CurvesTransformation, SCNR
- In Photoshop: make background sky dark (25:25:25) with Levels
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