Siril - Manual white balance from another image

[gadolf (Gustavo Adolfo)]

Hi!
Is it possible to manually apply white balance values from another image?
If so, how do I get WB values from one image, or from its process folder?

My problem is that Photometric Color Calibration isn’t working for this specific image, but it worked well with another one that basically frames the same region of the sky.

For the record, the image is a DSLR 18mm stack where, in my last attempt, I cropped it to get rid of the foreground trees in the hope that they may be interfering with the PCC algo. In this case, my idea was to get the WB values, then get back to the full image and apply them in the old color calibration tool.

2023-05-27T14.43.03.log.txt (71.8 KB)

This is the one where PCC fails (cropped):

fit: https://nextcloud.nosotros.ong.br/s/Ymc3xMfMEr5m5CR

This is the one where it succeeded, without the need to crop it, and basically from the same sky region.

[vinvin (Vincent Hourdin)]

Hello, your image solved on first try using local astrometry.net from Siril. Siril’s plate solver rarely works for images with very wide fields of view like that. I suggest you install that or plate solve the image another way and do the PCC in Siril afterwards.
To do what you asked, you could create a sequence containing the two images, mark the correct image as reference image, then do a sequence normalization. Something similar is explained in the tutorial on making comet animations.