Quote:
Originally Posted by Spookyer
I have used LAB in non astro images a bit, it gives you a few more options so I would be interested to see what it offers for astro.
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G'day Brett,
Uses I have found so far are intensifying colour (as per the video tutorial from Louie that Allan posted above), modifying colour (tweaking that cyan galaxy to make it look more blue, etc.) and a host of applications for operating on lightness or colour independently. A good example of this is incorporating RGB star colours in a narrowband image by merging the a and b channels through a star mask but leaving L unmodified so that the star profiles don't change.
Cheers,
Rick.