题名丽江2.4米望远镜自动导星系统软件设计
作者张介
学位类别硕士
答辩日期2012-05
授予单位中国科学院研究生院(云南天文台)
授予地点北京
导师白金明 ; 范玉峰
关键词自动导星 机器视觉 高斯拟合 GSC2.3星表
其他题名The Design Of Auto-guiding System Software Of The Lijiang 2.4m Telescope
学位专业天文技术与方法
中文摘要云南天文台丽江2.4米望远镜自动导星系统升级需要开发新的自动导星系统软件。参考原自动导星系统软件的功能,本文利用Wxwidgets、OpenCV等开源代码库,开发Linux系统平台上的自动导星系统软件。 该软件可以从CCD/FITS文件读入数据,然后自动分析图像数据,完成阈值设定和星像轮廓搜索,最后采用高斯拟合法计算星像中心;还可以按设定的目标坐标、极限星等、天区范围、波段条件来查询GSC2.3星表数据,同时以图像形式显示星表数据。目前基本完成了自动导星系统软件开发平台的搭建,及以上功能的算法调试,同时调试了SBIG CCD相机等硬件接口。 本文主要介绍了自动导星系统软件开发中所涉及的自动导星算法及其软件实现技术。其中算法包括:机器视觉CCD图像星像识别算法、星像中心高斯拟合算法以及算法中所需的天光背景参数的估计方法。并详细说明了此软件的设计方法和开源代码库的开发方法。
英文摘要The upgrade of auto-guiding system of the Lijiang 2.4 m telescope requires to develop the new auto-guiding system software. Referred to the original auto-guiding system software, we developed the new auto-guiding system software on the Linux system by taking advantage of open source libraries of Wxwidgets and OpenCV. The system fetches image data from the FITS files or CCD devices, and then automatically analyzes the data to tune the threshold value and searches stellar images profile. At last the system estimates the real position of the stellar images by the method of Gaussian fitting. The software is designed to query the GSC2.3 catalog data, with the required target coordinates, magnitude limit, sky-area zone and waveband. Also the data is represented as an image in the software. Now the work of establishing software development platform of the auto-guiding system and the work of algorithms debugging are almost complete. Also we debugged the hardware interfaces of SBIG CCD camera etc. In this paper, we introduce the auto-guiding algorithms and the software development technology in the development process of the auto-guiding system software. The auto-guiding algorithms includes, the stellar images recognition algorithm in CCD images of machine vision, the centering method of Gaussian fitting of stellar images and the parameters such as the sky brightness tuning method, which required for fitting. There is a detailed description of the design of the auto-guiding system software and the development of open source software.
语种中文
学科主题天文学
内容类型学位论文
源URL[http://ir.ynao.ac.cn/handle/114a53/5564]  
专题云南天文台_丽江天文观测站(南方基地)
推荐引用方式
GB/T 7714
张介. 丽江2.4米望远镜自动导星系统软件设计[D]. 北京. 中国科学院研究生院(云南天文台). 2012.
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