question about camera orientations on spacecraft Options

[ncc1701d]

when spacecraft orbit the planets and take photos or take sensor readings do the cameras or sensors ever move or rotate independantly of the rotation of the spacecraft?
or is the whole spacecraft always rotated/oriented for the best shots because the cameras and sensors are always mounted firmly to spacecraft with no independant rotational capablities?
thanks

[Explorer1]

Some older missions (Voyagers 1 and 2, Galileo) had scan platforms with isntruments mounted on them that 'aimed' at the object, but the mechanical complexity of them led to a gradual phasing out. Cassini, New Horizons, etc turn the whole spacecraft to aim instruments. Some like Juno spin constantly, with instruments pointing outward and sweeping across the target to get their measurements.

More info in this thread from a decade (!) ago: http://www.unmannedspaceflight.com/index.p...=4819&st=15