Mirror exchange device for split mirror type telescope and its mirror exchange method

摘要

A mirror exchange device (1) for a split mirror telescope capable of positioning the split mirror (3) with high accuracy is obtained. A gripping mechanism (6) for gripping the split mirror (3), a precision drive mechanism (7) for changing the position and posture of the gripping mechanism (6), a lift mechanism (4) of the split mirror, a comparison object and a target object A first detection unit (111, 112) for detecting a relative position and a relative posture between the object, a second detection unit (110) for detecting a deflection of the fine drive mechanism, and a detection signal from the detection unit A mirror exchange control unit that exchanges the split mirror based on A mirror exchange device that performs control based on a detection signal from the first detection unit when possible and a detection signal from the second detection unit when not.