Hi all, this is my very first post on Affinity Forum and I have very little experience with Affinity Photo.
I'm an astrophotographer and today I'ma trying to postprocess a Moon image to create a "mineral moon" image.
I usually use an astrophotograpy dedicated software but now I want to try to process the image with Affinity.
The very first step of mineral moon processing is perfectly white balancing the moon disk by aligning the RGB hystograms.
In my case, as you can see in the attached picture (Image 01), the moon has a strong yellowish/pinkish color (due to some preprocessing I have done before) so I've tried to white balance.
First I tried to use Filters-Color-Automatic white balance, but the result isn't good. (Image 02)
Second I've tried with a color balancing layer, using the picker and tracing a rectangle on the moon surface with the ALT button pressed.
Even in this case the color balance isn't correct: I still have a red excess (as you can see in the histogram) (Image 03)
Only moving the sliders by hand I can get a decent result (Image 04 and image 05 after saturation), but I would prefer a more "automatic" method.
Am I doing something wrong?
Just for reference I've uploaded the result that I've obtained with the astrophotograpy software (where I have a lot of esperience).
Thank you for help
Edoardo Luca Radice