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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
by ucyo 2y ago
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?
- perihelions 2y agoA 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." https://airandspace.si.edu/collection-objects/star-tracker-and-hood-assembly-support-equipment-voyager-spacecraft/nasm_A19990065003 https://airandspace.si.edu/collection-objects/star-tracker-a... ("Star Tracker and Hood Assembly Support Equipment, Voyager Spacecraft") https://airandspace.si.edu/collection-objects/sun-sensor-and-hood-assembly-support-equipment-voyager-spacecraft/nasm_A19990065002 https://airandspace.si.edu/collection-objects/sun-sensor-and... ("Sun Sensor and Hood Assembly Support Equipment, Voyager Spacecraft") edit: In more detail, https://space.stackexchange.com/questions/43803/how-did-the-canopus-star-tracker-work-are-there-any-still-out-there-in-service https://space.stackexchange.com/questions/43803/how-did-the-...