Wednesday, 24 November 2021
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From the several projects, I found the star shape and coma are especially bad for the red channel, in particular the top right side, thus producing lots of purple fringing for the stars. 
Have you experienced the same issue? If so, is there any solution?
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Hi, 

I haven't as yet processed many broadband projects and may not have been attentive enough during processing to notice what you are pointing out. I'd welcome it if you could list any targets/job numbers where that is clearly an issue. If I haven't processed any of them to look at what my results show, then I can then choose one so as to replicate it.

I probably won't have any solution and I'm sure you've tried yourself to find one, but it's worth getting further confirmation on this. 

Cheers, 

Ray 

Ray
Roboscopes Guinea Pig


2 years ago
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#4072
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Attached is the red channel of vdb152 with minimal processing.  The stars have more aberration on the top right part (pass the diagonal line). 
Strangely, I did not see this for other channels.  The second pic is a processed version of LHaRGB image.  I removed the supposed purple fringes of the stars of top right part of the image by inverting and SCNR with Green, so the stars are now golden :)


vdb152-Red-session_1-1.jpg
L_NBRGBCombination_lin.jpg
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Glad you managed to remove the fringing and letting us know. :) 

Ray
Roboscopes Guinea Pig


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