Fringe killer usage

Questions and answers about processing in StarTools and how to accomplish certain tasks.
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mgutierrez
Posts: 42
Joined: Sat Oct 24, 2020 11:07 pm

Fringe killer usage

Post by mgutierrez »

Hi all,

I'm trying to remove chromatic aberration from some stars. Fringe killer works nice but leaves a grayish background color where I apply the filter:

before:
Selection_077.png
Selection_077.png (47.57 KiB) Viewed 128 times
after:
Selection_079.png
Selection_079.png (47.22 KiB) Viewed 128 times
any tips?

m
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admin
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Re: Fringe killer usage

Post by admin »

The Finge Killer indeed leaves the luminance (detail) intact and only attacks the color.

A few different techniques;
  • You could try the Shrink module on those stars, with Color Taming increased.
  • If your blue channel is very poor, you could also decide not to use it for luminance at all; use the Compose module to create a synthetic luminance frame from just red and green (set blue exposure to 0).
  • You can also use the FilmDev module to throttle the blue channel's luminance contribution before using the Filter module.
Hope this helps!
Ivo Jager
StarTools creator and astronomy enthusiast
happy-kat
Posts: 301
Joined: Sun Feb 01, 2015 11:31 am

Re: Fringe killer usage

Post by happy-kat »

Another option is to select all the problematic stars and exclude them from the colour module so they stay as just luminance.
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