Design And Development Of The Control System For Multi-band Photometry System Of Lijiang 2.4-meters Telescope

The 2.4-meter telescope of Lijiang is an important platform for astronomical re-search in China.It bears the heavy observation task and the observation time is in short supply.It needs to improve its observation efficiency in order to meet the needs of the domestic astronomical observation.In order to improve the observation efficiency of the Lijiang 2.4-meter telescope on the basis of the existing instruments performance,it needs to establish a complete observation control system for telescope to realize the reasonable scheduling of telescope,observation instruments and observation plan to improve the observation time utilization.The integration of observation instruments control system should be completed before the observation control system is established.The original control program of the multi-band photometric system(PI CCD)does not have the integration conditions.In this paper,we redesigning and developing the control system for it,which meets the requirements of instruments control system integration.At present,the Lijiang 2.4-meter telescope has already completed the preliminary observation control system,and the YFOSC and the telescope have completed the integration of the control system.Redevelopment of PI CCD instrument control system,first of all,needs to fully understand the role and function of the instrument control system in the observation control system,and forms the design idea of the instrument control subsystem.Then,learn from YFOSC and telescope control system and fully investigate the observation and control system of large telescope at home and abroad and combine the hardware structure of PI CCD,we designed the new PI CCD control system based on observation control program and instrument control subsystem.The observation control program is used to realize remote control of the system,providing the system state monitoring and control interface,and to connect with the instrument control subsystem through the telescope network.Instrument control subsystem is used to control the terminal instruments,consists of two parts,program and database,and a control method combined with control instructions and database is used,which is consistent with YFOSC and telescope,to meet the requirements of the control system integration.