NGC281 (Pacman Nebula) -Reprocessed

Re-processing my Pacman data for for better OIII visualization.

 

Stacking: SiriL (Ha & OIII extraction)

 

Processing: Pixinsight

 

* DBE on each, Ha and OIII

* Histogram stretch and linear fit

* Star removal and star mask using Starnet 2

* Noise reduction on the starless images

* Combining Ha and OIII using Pixelmath with a Heaviside function (approximated by a tanh), softly replacing Ha with OIII where OIII exceeds a certain threshold compared to Ha

* ASinh stretch on the RGB result

* Pixelmath for combining Ha and OIII to color image for stars

* Blending the RGB nebula into the new image using the image mask from StarNet2

* Minor color adjustment with curves transformation

Done