The Solar Optical Telescope (SOT) is a shuttle-based observatory designed to give more detailed views of the Sun than has been possible using Earth-based observatories. It will be able to resolve details on the Sun which subtend 0.1 arc seconds for continuous viewing periods of up to several hours. When budgeted into the various error sources which contribute to the overall image quality, jitter of the telescope can contribute only 0.03 arc seconds rms pointing error over the science observation periods. To meet this stringent pointing requirement, several layers of control systems are utilized.
David J. Bundas,
"A Simulation Of The Pointing Performance Of The Solar Optical Telescope", Proc. SPIE 0641, Acquisition, Tracking, and Pointing, (1 February 1987); doi: 10.1117/12.964431; https://doi.org/10.1117/12.964431