| Abstract: | A control system for diaphragm on the DCMT has been proposed. It is necessary to have a control system on the automatic meridian circle to control the nadir mirror and the two auto-collimation imagines. In this paper,the principle of design for the diaphragm is presented. This system can work in both the modes of connecing with computer and offconnecing with computer.The system has been mounted on the DCMT. It has been shown that the design is reasenable and the operation is very convenient. |
