Tri-color narrowband imaging involves capturing images through H-alpha, OIII, and SII filters separately, then combining them in post-processing.
This technique, often called the Hubble Palette, maps SII to red, H-alpha to green, and OIII to blue, producing striking false-color images that reveal the complex chemistry and structure of nebulae.
It’s a favorite among advanced astrophotographers for its artistic and scientific value, transforming faint gas clouds into vibrant cosmic masterpieces.
