| 摘要 |
PROBLEM TO BE SOLVED: To cancel the periodic motion of right ascension axis rotation in the astronomical tracking of an astronomical telescope without depending on electric means.SOLUTION: In the rotation mechanism of an astronomical telescope lens-barrel using a drive worm 4 and worm wheel 5 of a motor 1, the angular velocity variation of periodic motion having an opposite phase to the periodic motion is given to a worm shaft by using a non-uniform velocity transmission mechanism having a non-uniform velocity rotation generated synchronizing with a period of one rotation of the worm for a transmission mechanism between a motor shaft and the worm shaft to cancel the periodic motion. |
