Optical instruments are sometimes mounted on an articulated, powered appendage towards the spacecraft bus called a scan System, which points in commanded directions, making it possible for optical observations to get taken independently on the spacecraft's Mind-set. This is the case on Voyager and Galileo. Most more recent spacecraft are https://gregorygimki.blogscribble.com/28923894/new-step-by-step-map-for-cool-tech-items