Image spcefications:
- Exposure: 14 hours, RGBHaO3 = 30:30:30:510:240 minutes
- Camera: ZWO2600MM, Temp -10 ° C, Baader RGB filters, Astrodon 5nm Ha
- Instrument: TEC 140 with field flattener, focal distance 980 mm
- Guiding: TS Off Axisguider, Starlight Xpress Lodestar autoguider and PHD
- Mount: Paramount MX+
- Ambient temperature: Between 16 ° C and 24 ° C
- Location: Nozières, France
- Date: 6, 7, 9 and 10 July 2026
- © Frans Kroon, Arno-MarkBlesgraaf
Image acquisition with Sequence Generator Pro:
- 34 H-alpha of 15 min binned 1x1
- 16 O3 of 15 min binned 1x1
- 6 Red + 6 Green + 6 Blue of 5 min, binned 1x1
- 20 Flat fields with flatfield panel
- 20 Dark frames of 15 and 5 min
- 50 Bias frames
Processing in PixInsight 1.9.4
Lineair:
- ImageCalibration, CosmeticCorrection and StarAlignment
- ImageIntegration and ChannelCombination RGB
- MultiscaleGradiantCorrection, ImageSolver and SPCC
- BlurXTerminator on Ha and RGB
Non Lineair:
- MultiscaleAdaptiveStrech on Ha and RGB
- NoiseXTerminator on Ha and RGB
- Create StarImage of RGB with StarXTerminator
- StarXTerminator on Ha
- CurvesTransformation, SCNR
- MultiscaleLineairTransform for sharpening
- MorphologicalTransformation for smaller stars
- PixelMath to combine Ha, O3 and RGB with
- PixelMath to put together: StarlessImage + StarImage
- In Photoshop: make background sky dark (25:25:25) with Levels
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