Cygnus Wall HOO tweaks?

[TiffsAndAstro]

hi all

so below is a HOO non drizzled of Cygnus Wall. I've smoothed/cleaned/denoised via the free tools i have and i think this is the best i can produce.

There is 'stippling' and i think this must be in my initial small stretches of the Ha and Oiii. I have not linear matched either Ha or Oiii to the other, as i think that's only needed for mono cameras? There is borderline posterising, also not certain where this appears

The RGB channels were created in siril via pixel math by my WonderStuff HOO expressions, as the result was GoldenGreen in colour. Its a little more blue now This might also introduce stipling/posterising if i've pushed them too much maybe?

also this is not drizzled - i can't seem to drizzle Ha/Oiii extraction in siril, with my slightly manual stacking process. 

any tips/insights how i get get rid or reduce the stipling/posterising would be great. Anything else too

 

 

 

 

 

Edited 18 hours ago by TiffsAndAstro