Does anyone know what the reference points are for the rotation manoeuvres? The text does not provide any information on how the probe knows that it is off. It needs some kind of reference, no?
A star tracker is one of its reference points (of absolute orientation). There's also a sun sensor with a similar function. I don't know if Voyagers have others.
- "In flight, the device found and locked on to the star Canopus, providing a reference for guidance and navigation."
