| 兴隆60 cm望远镜主焦CCD系统测光性能的研究 |
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| 引用本文： | 石火明,乔琪源,胡景耀,林清.兴隆60 cm望远镜主焦CCD系统测光性能的研究[J].中国天文和天体物理学报,1998(1). |
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| 作者姓名： | 石火明 乔琪源 胡景耀 林清 |
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| 作者单位： | 中国科学院上海天文台，中国科学院北京天文台 |
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| 摘 要： | 对兴隆６０ｃｍ望远镜主焦ＣＣＤ系统的测光性能进行了测试和研究．测定了ＣＣＤ快门时间函数，讨论了快门延迟效应对短时间曝光观测的可能影响．通过观测大批Ｌａｎｄｏｌｔ标准星，较准确地定出了ＢＶＲＩ宽带测光的星等系统转换关系，结果表明本系统与标准ＢＶＲＩ系统很接近．对ＣＣＤ系统的天文测光精度作了仔细的检验和分析，并对ＰＳＦ拟合测光和孔径测光两种方法进行了比较
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| 关 键 词： | 天文望远镜 CCD系统 测光性能 星等 |
Characterization of the CCD System at the BAO 60 cm Reflector for Photometry |
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| SHI Huo ming,QIAO Qi yuan,\ HU Jing yao,LIN Qing.Characterization of the CCD System at the BAO 60 cm Reflector for Photometry[J].Chinese Journal of Astronomy and Astrophysics,1998(1). |
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| Authors: | SHI Huo ming QIAO Qi yuan \ HU Jing yao LIN Qing |
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| Institution: | SHI Huo ming 1 QIAO Qi yuan 2 \ HU Jing yao 2 LIN Qing 1 1 |
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| Abstract: | In this paper, the photometric characteristics of the CCD system on the BAO 60 cm reflector are studied. The CCD's shutter time function is determined and the possible influence of the shutter delay action effect on short exposure is discussed. A set of Landolt's standard stars are observed. Based on these observations, the BVRI magnitude transformation equation is established. It shows that the CCD photometric system is very close to the standard BVRI system. The photometric precision is analysed and two photometric methods, i.e. PSF fitting and aperture photometry are compared. |
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