Quote:
Originally Posted by Gavin1234
Just learnt star mask and morphological transform in PI.
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You're two up on me, I've barely scratched the surface in PI. The pic already looks better.
You could try Photometric Colour Calibration to see if it brings colour back to the stars - you have to enter a few figures but it's self explanatory - tell it you're at M20, the focal length and pixel size..... not much else needs to be adjusted from memory.