Quote:
Originally Posted by rogerg
Thanks Rick,
I love the colour variance you have, the dynamic difference in colours across the galaxy. In comparison mine looks more monotone aside from the bright pink regions. Was that using a Linear Fit or such in PI that got you that good colour variation?
You seem o have lost some fine detail in the galaxy for some reason - looking slightly "blotchy" in parts, perhaps due to what you used to get the star colour better? (looking at the pink detail in particular)
Thanks for your efforts, much appreciate the discussion to improve my poor LRGB attempts.
Regards,
Roger.
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Roger,
I did a CosmeticCorrection at the start to get rid of some cold pixels in the Luminance and that left some artifacts in the brighter areas (it even managed to join some small stars together). I think that's what was responsible for the loss of detail. I wouldn't normally use CC this way but I didn't have a master dark for my normal technique... probably would have been better to leave the cold pixels and clone them out later.
For the RGB the processing steps were: [L]RGBCombine, DBE (twice), BackgroundNeutralization, ColorCalibration (with galaxy as white reference), SCNR to reduce green, light TGVDenoise, stretch, ACDNR chrominance noise reduction, Luminance masked curves saturation boost, masked curves desaturate background.
I think the "magic" step was the saturation boost. There's usually plenty of colour lurking in these images but you have to drag it out (and sometimes you have to be more selective about what you do and don't enhance).
Cheers,
Rick.