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对天文望远镜的观测数据或控制过程状态进行实时的图形化显示,是天文仪器研制过程中的一个重要环节。随着Linux操作系统在天文领域的广泛应用,如何开发基于LINUX图形界面的实时图形化显示系统成为一种迫切需求。针对我国明安图超宽频射电日像仪(Mingantu Ultrawide Spectral Radio Heliograph,MUSER,原名为中国射电频谱日像仪,CSRH)实时观测数据图形化显示的要求,给出了一种利用QT架构进行实时、多屏的图形化展现方法,并以互相关与自相关数据实时展现为例进行了验证。实验表明本方法完全可以满足MUSER实时观测监控的要求,并且具有简单、快捷、可移植性好等优点,克服了LINUX下X-WINDOW编程困难等难题,对其它望远镜设计类似功能有一定的参考价值。

To achieve real-time graphical display of observational data or control processes/statuses of an astronomical telescope is an important part in the development process of instruments for the telescope. As Linux systems are being extensively applied in astronomy, it becomes a pressing demand to develop real-time graphical-display systems based on Linux graphical interfaces for astronomical telescopes. In this paper, we present a method that uses a Qt framework to achieve real-time multi-monitor graphical display to meet the requirements for the MUSER (Mingantu Ultrawide Spectral Radio heliograph, which is originally called the Chinese Spectral Radio Heliograph, or CSRH). We have validated the method through real-time display of cross correlations and auto-correlations of signals detected by the radio antennas of the MUSER. Our experimental results show that our method can meet the requirements of real-time observational monitoring of the MUSER. It has merits such as simplicity, fast response, and excellent portability. The method also overcomes the difficulties of X-WINDOW programming under a LINUX system. Our study can serve as a reference for designs of systems of similar functions on other telescopes.