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