I have written three detailed blog articles explaining two distinct but related Gimp workflows that, in addition to the use of other software, enables the drastic improvement of elongated stars in astronomical images.
Click on an image to get a closer view
An animation showing before and after star repair
The example used here was data from an EQ mounted Seestar S50 that showed imperfect tracking that was not severe enough for the Seestar's capture routines to reject the frames.
It is hoped that the techniques and ideas introduced here will prove to be useful to astro-imagers.
Steve Wainwright
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