The Heart and the Soul

The Heart and the Soul, featuring a rarely imaged supernova remnant (SNR 132.7+1.3) in the bottom right corner !

Equipment

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

Acquisition (Total : 40h)

  • Location : Backyard, bortle 5
  • Ha : 17.8h
  • OIII : 13.1h
  • SII : 9.1h
  • Software : N.I.N.A

Processing (PixInsight)

Individual channel processing

  • Gradient removal (DBE)
  • Noise reduction (TGV and MMT)
  • HistogramTransformation
  • StarNet++

Color combination

  • R : Sii
  • G : Ha
  • B : Oiii

Luminance processing

  • L : (Ha^2 + Oiii^2 + Sii^2)/(Ha + Oiii + Sii)
  • Unstretch + deconvolution (tutorial)
  • PixelMath to add the Ha stars back
  • Protective stretch (tutorial coming soon)

LRGB processing

  • LRGBCombination
  • PixelMath to remove the stars
  • HDRMultiscaleTransform
  • LocalHistogramEqualization
  • DBE
  • PixelMath to add the stars back
  • CurvesTransformation
  • ColorSaturation
  • HOO stars blend
  • Star reduction (tutorial)

Taken in November 2020

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