Few months ago I had a problem with writing a script for detecting satellites from Earth-based station with given FoV. You all guys were very helpful and it worked like a charm (thread for reference). Now I’m trying to elevate this script a bit - I want to change this old script to carry out simulations with satellite-based observer. Let’s say I have a TLE for particular satellite and there is some sort of camera on this telescope with known FoV (lets say its rectangular 5x5degrees FoV directed straight ahead). Also I have a list of TLEs for every LEO satellite. How do I define frames, measurements, and FoV for this task?