The system has photodetectors (10) to record an image formed by a part of a telescope (1) from light rays directed by secondary mirrors (4, 5) towards the entrance of the telescope. The mirrors are rigidly coupled to a principal pointing mirror (2) to foll...

The activator has a support (116) mounted on a base (110) and rotated around an axis (120) by a direct current torque motor (124). The support holds a spinner (134) rotated around an axis (132) that is perpendicular to the axis (120), by a torque motor (14...