Abstract: A mount for a telescope incorporates a worm gear assembly comprising: a worm wheel connected to a telescope holder, such that movement of the worm wheel about a wheel axis causes movement of the holder about the wheel axis; and a worm shaft having a worm body extending in a longitudinal direction and a thread extending in a spiral on the worm body around a worm axis orthogonal to the wheel axis. The worm shaft is supported by a base for rotational movement. The worm wheel comprises a plurality teeth for engaging the worm shaft thread, so that rotation of the worm shaft about the worm axis causes corresponding rotation of the worm wheel, and corresponding relative rotation between the holder and the base, about the wheel axis. The wheel body defines a plurality of elasticity-enhancing cutouts spaced apart from the wheel axis and extending through the wheel body.

Abstract: A mount for a telescope incorporates a worm gear assembly comprising: a worm wheel connected to a telescope holder, such that movement of the worm wheel about a wheel axis causes movement of the holder about the wheel axis; and a worm shaft having a worm body extending in a longitudinal direction and a thread extending in a spiral on the worm body around a worm axis orthogonal to the wheel axis. The worm shaft is supported by a base for rotational movement. The worm wheel comprises a plurality teeth for engaging the worm shaft thread, so that rotation of the worm shaft about the worm axis causes corresponding rotation of the worm wheel, and corresponding relative rotation between the holder and the base, about the wheel axis. The wheel body defines a plurality of elasticity-enhancing cutouts spaced apart from the wheel axis and extending through the wheel body.

Abstract: A human-machine interface system includes a master unit and a device bridge. The master unit includes a first processor and the device bridge includes a second processor, where the second processor is connected to the master unit through a bus and a device end through a device communication port. The device bridge has communication ability with the device end and processing ability. Therefore, the device bridge can report device status to the master unit. In design stage of the human-machine interface system, screen elements and device address transfer table are designed in parallel, and then the screen elements are merged with the device address transfer table. In operation stage of the human-machine interface system, the status of the device end can be written in internal memory of the device bridge. The master unit knows the status of the device end by reading the internal memory of the device bridge.