Many people prefer the SHO Hubble pallate (were Red is Sulfur 2, Green is Hydrogen alpha, and Blue is Oxygen 3) for rendering images with colors outside the range of human eyesight. There is very lettle Sulfur in most images, I usually use an HOO palate. An alternative is to Hydrogen and Oxygen data to create a synthetic red channel to create an image similar in appearance to a SHO palate. I've done this with this image of the Rosette Nebula.

The Rosette Nebula, Sh2-275, NGC2237, is a star forming nebula in Monoceros. It is 65 LY across and 5,000 LY distant. 18 hours of #NBOSC exposures on under Bortle 3 - 7 skies from Bad Wolf Ranch, Austin, & Tucson,

Rendered in a synthetic sHO palate (synthetic=red, Hydrogen=blue, Oxygen=green) palatte on 5 nights in December 2024. WO RedCat 250/51mm, L-Ultimate dual NB filter, ASI533 MC camera, ASIAIR Plus controller, AM5N mount.

216 5' exposures stacked and processed in PixInsight with RC-Astro and SetiAstro tools. Final exp and crop in Affinity Photo

A HOO palatte rendering is shown below: