The Reconstruction of Filter-shelf on 1m Telescope

The interface of filter on 1M Telescope of Yunnan Observatory was controled by the hand before.It was not convenient for use.Now a system controled by a micro process unit is reconstructed.The filter-shelf can also be controled by a remote computer through the interface of RS232.Filter-shelf is drived by a direct current motor and positioned by photoelectricity switch.The system has been operated from 23/11/2005.