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Old 13-07-2018, 06:39 AM
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alpal
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Join Date: Jan 2012
Location: Melbourne
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Quote:
Originally Posted by Peter Ward View Post
Suggest you re-read Cols answer: he is on the money.

Your suggested method cannot resolve where the colours should be.



I don't know about that Peter.
I think FSR is on the money.
You take 100% Luminance layer in Photoshop and subtract 33% of the Red channel
then subtract 33% of the Green channel -
flatten it -then you have a synthetic Blue channel.
You then combine your Red , Green & synthetic Blue channels to form an RGB picture then
add the Luminance layer as "Luminosity" blend in Photoshop.

I did it & posted the pic - it works.
Maybe you could try it with one of your pics?

Anyone can try it for themselves if they have LRGB data.


Edit - It may not work that well on a dim galaxy as all the noise
left over could be turned to blue
giving a blue cast to the whole background.
I did it on a bright target.



cheers
Allan

Last edited by alpal; 13-07-2018 at 06:50 AM.
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