The image processing software ASTAP has a very nice feature. With one key you can create an aberration view of the image. Its a combination of 8 small images frames of the outer corners of the image, plus the center frame. This is extremely useful to access and correct sensor tilts with a tilting unit. I include an example here:
https://www.goetz-golla.de/index.php/2021/08/14/using-an-abberation-inspector-and-ctu/
It would be great if Siril could provide such a feature.
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Thanks for the idea! That could be nice indeed.
Are you aware of the new Tilt evaluation tool?
Yes, I have been trying to use the tilt tool extensively, however I found it rather inaccurate compared to the aberration view. It also doesnt tell you in which direction a corner is out of focus.