摘要
详细介绍了利用孔径测光方法得到CCD图像中恒星仪器星等的全过程,以及使用自己设计的程序对云南天文台1m望远镜观测的CCD图像进行实际测量的实验。测量结果表明:对亮星(约10mag)的内部测量精度能达到0.003mag,而对暗星(约17mag)达到0.2mag。同时,对相关问题进行深入讨论,总结了一些实验所得的经验,并与测光软件IRAF进行了内部精度的比较。
This paper describes the details of the procedure of deriving instrumental stellar magnitudes from a CCD image using aperture photometry. We conducted experiments of the procedure based on CCD images obtained with the 1 m telescope of the Yunnan Observatory. The results reveal that the internal precisions are 0. 003mag and 0.2mag for a bright star（ - 10mag） and a faint star（ - 17mag） , respectively. In addition, we discuss related issues and some experiences from the experiments. The comparison to the results from the photometric software IRAF is presented as well.
出处
《天文研究与技术》
CSCD
2010年第2期124-131,共8页
Astronomical Research & Technology
基金
国家自然科学基金(10778617
10973007)
中国科学院天文联合基金(10573008)资助
关键词
孔径测光
天空背景:生长曲线
Aperture photometry
Sky background
Curve of grouth
作者简介
作者简介：曾开华，男，硕士，研究方向：图形网像处理，Email：zengkaihuamaths@tom．com.
