[avandonk]

Very good detailed image Paul.

I am not at all an expert on combining NB data but my years at Kodak where they drummed colour theory that is basically human vision response to light is still with me.

Magenta stars tells me the stars in the red and blue channels are far too bright for the green channel. This is most probably due to getting the SII (red) and OIII (blue) nebulosity up to near the level of the HA (green). This is the Hubble pallette?

The continuum filter that Astrodon sell would solve this problem by just subtracting some star intensity from SII and OIII NB data before combining with HA NB data.

Have I got this correct or am I just dreaming?

By the way in additive colour, magenta is the absence of green. Have a look at a colour negative and all the trees and green plants are magenta!

Bert