It might be helpful if you read about what platesolving is: https://en.wikipedia.org/wiki/Astrometric_solving https://en.wikipedia.org/wiki/Astrometric_solving

It might be helpful if you read about what platesolving is: https://en.wikipedia.org/wiki/Astrometric_solving https://en.wikipedia.org/wiki/Astrometric_solving It's a well defined problem of taking star positions and pinpointing its celestial coordinates. There's even a term for being able to do that without knowing anything about the camera, telescope or distortion, it's called blind solving. Plenty of tools to do it are available online and they're an essential part of an astrophotographers tools. Fun fact, most of our ICBMs rely on plate solving to navigate so they can hit their targets even when GPS signals are disrupted.