I shoot landscape astro, so there is almost always a foreground. The foreground images are often shot when sky glow, or the moon, is present to illuminate the scene. I typically have a large sequence of these. I want to process them in Siril.
Mostly this is convenience - I am using Siril for the stars, why not the foreground. But it is also true that terrestrial photography does not have great tools for registering and stacking lots of images.
I think the way to do this is to use the “Enhanced Correlation Coefficient Maximization” method in Registration. It says it is for “planetary surfaces” and Earth is a planet.
I assume that to use this I will need to select a region that only includes foreground.