GaryKirchberg
My first try with Siril i used this howto: https://youtu.be/SyKw06fz8LU?si=GtAmKWKlorzoGJls
After testing this on a few 10min images i got much better result compared to the one S50 gives you.
Manually stack the sub-frames within the S50 can also give you better images. But its slow.
You can also stack subframes with siril: https://youtu.be/8iL2bzewBrQ?si=b7hUDYvJKhLgVMw0
More seestar and siril can be found as: https://www.youtube.com/@DeepSpaceAstro
Rich have several good howtos and gets more in the depth.
Using Siril etc is something you do a rainfull night.
Free tip: always copy your file to a new location before trying using Siril or whatever software.
When you have learned it its not that important but im always work on a copy and not my raw files.
Have not yet been able to take a 4h shot due to weather and time. But this would give you even more whe stacking using i.e Siril.
I would start with Chris Grays videos and just "copy" what he does and do this several times on the same image until you get the idea.
After that i would test Rich methods at Deep Space Astro