| 高精度恒星孔径测光注释 |
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| 引用本文： | 曾开华,彭青玉.高精度恒星孔径测光注释[J].天文研究与技术,2010,7(2). |
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| 作者姓名： | 曾开华 彭青玉 |
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| 作者单位： | 曾开华,ZENG Kai-hua(暨南大学计算机科学系,广州,510632;广东省高等学校光电信息与传感器技术重点实验室,广州,510632);彭青玉,PENG Qing-yu(暨南大学计算机科学系,广州,510632;广东省高等学校光电信息与传感器技术重点实验室,广州,510632;中国科学院光学天文联合开放实验室,昆明,650011) |
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| 基金项目： | 国家自然科学基金，中国科学院天文联合基金 |
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| 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。
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| 关 键 词： | 孔径测光 天空背景 生长曲线 |
Notes on High Precision Aperture Photometry of Stars |
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| ZENG Kai-hua,PENG Qing-yu.Notes on High Precision Aperture Photometry of Stars[J].Astronomical Research & Technology,2010,7(2). |
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| Authors: | ZENG Kai-hua PENG Qing-yu |
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| Affiliation: | ZENG Kai-hua1,2,PENG Qing-yu1,3(1.Department of Computer Science,Jinan University,Guangzhou 510632,China,2.Key Laboratory of Optoelectronic Information and Sensor Technologies of Guangdong Higher EducationalInstitutes,3.Joint Laboratory for Optical Astronomy,Chinese Academy of Sciences,Kunming 650011,China) |
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| Abstract: | 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 ... |
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| Keywords: | Aperture photometry Sky background Curve of grouth |
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