DIRECTIONAL-AXIS ESTIMATION DEVICE

摘要

Provided is a pointing axis estimation apparatus capable of removing pointing axis variations caused by factors other than pointing axis variations of a telescope, thereby estimating true pointing errors of the telescope. The pointing axis estimation apparatus includes: a laser light source-unit attitude detector (18) for calculating translational and rotational displacements of a laser light source unit (4); an optical axis detection-unit attitude detector (19) for calculating translational and rotational displacements of an optical axis detection unit (11); a pointing axis calculator (20) for calculating a pointing axis based on information from an optical axis error detector (5); and a pointing error estimator (21) for calculating a true pointing error of a telescope based on displacement data output from the detectors and the calculator.