The Eagle and the Swan

The Eagle and the Swan.

Equipment

  • Samyang 135mm f/2
  • QHY163M
  • Baader narrowband filters
  • Sky-Watcher HEQ5 Pro
  • QHY5L-II-C and QHY 30mm guidescope

Acquisition (Total : 5.9h)

  • Location : Backyard, bortle 5
  • Ha : 58x180s (2.9h)
  • OIII : 30x180s (1.5h)
  • SII : 30x180s (1.5h)

Processing (PixInsight)

Individual channel processing

  • DynamicCrop

  • DynamicBackgroundExtraction

  • Noise reduction (TGV and MMT)

  • EZ Soft Stretch (script)

  • HDRMultiscaleTransform
  • Deconvolution (tutorial)

Color combination (tutorial)

  • R  : (Oiii^~Oiii)*Sii + ~(Oiii^~Oiii)*Ha
  • G : ((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii
  • B  : OIII

Luminance processing

  • L : Ha

  • StarNet++
  • Large scale sharpening (MLT)

  • HDRMultiscaleTransform

  • LocalHistogramEqualization

  • DarkStructureEnhance

  • Adding the stars back (PixelMath)

LRGB processing

  • LRGBCombination
  • Star reduction (tutorial)
  • CurvesTransformation
  • BackgroundNeutralization
  • HSL sliders in Lightroom

Taken in July 2020

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