Lars,
Sorry, I am not a programmer, I am RF engineer.. analog person :-)
But I am sure there will be someone on the forum that may be willing to help.
Or, it may be worth to contact OnStep community (
http://www.stellarjourney.com/index....oftware_camera). OnStep has ASCOM driver, maybe INDI is also supported (not sure..).
OnSteo home page/forum is here:
https://onstep.groups.io/g/main