用大面阵CCD实现全日面像自动导行  

Tracking and guiding for full solar disk image using large CCD-array

作　　者：肖江[1] 胡柯良[1] 林佳本[1] 申基[1] 邓元勇[1] 

机构地区：[1]中国科学院国家天文台,北京100012

出　　处：《光学精密工程》2008年第9期1589-1594,共6页Optics and Precision Engineering

基　　金：国家973工程资助项目(No.2006CB806301);中国科学院方向性项目(No.KJCX2-YW-T04);国家自然科学基金资助项目(No.10473016;No.10673016)

摘　　要：介绍了基于质心算法并用大面阵CCD实现的全日面磁场望远镜的自动跟踪与导行技术。该方法利用具有高实时处理能力的嵌入式终端设备计算和处理太阳质心数据,构成高精度的位置环导行系统;同时对CCD图像采用"二值化"处理,提高了导行精度和对不良天气的抗干扰能力。利用该方法可大大降低原有导行技术的成本和复杂度,适用于空间太阳望远镜的导行。实测分析表明,在连续工作1 h的情况下,该系统导行精度优于1″,达到系统设计需求.An auto-tracking and guiding system for full solar disk image was introduced based on mass-center algorithm and large CCD-array. An embedded system with high speed processing ability was used to compute and process mass-center data and all CCD images were dealed with binarization process. Compared with the traditional system, the new system can greatly reduce the cost and complexity and can enhance the accuracy of the tracking system and reduce the dependency of weather condition. A high-precision closed-loop tracking apparatus was designed also in this system. According to the analysis of the experimental data, the new auto-tracking and guiding system achieves the precision of 1″ during one hour observation, which satisfies the requirements of the system.

关 键 词：太阳望远镜 自动跟踪 CCD导行 

分 类 号：P111.41[天文地球—天文学] TN386.5[电子电信—物理电子学]