| A Performance Study of the CCD Cameras of the Joint Laboratory of Optical Astronomy |
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| 作者姓名： | Bao-An Yao Chun-Sheng Zhang and Qing Lin
Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai
Purple Mountain Observatory Chinese Academy of Sciences Nanjing |
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| 作者单位： | Bao-An Yao，Chun-Sheng Zhang and Qing Lin
Shanghai Astronomical Observatory，Chinese Academy of Sciences，Shanghai 200030
Purple Mountain Observatory，Chinese Academy of Sciences，Nanjing 210008 |
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| 摘 要： | A performance study of several CCD cameras of the Chinese Joint Laboratory of Optical Astronomy (CJLOA) is presented. The main results are: 1) We propose a modified classical method to analyse the linearity of CCD cameras. This method is more sensitive and accurate as well as more intuitive, especially in measuring around the 0.1%-0.2% range of nonlinearity. 2) To illustrate the advantage of the method, the linearity performance of the CCD cameras at CJLOA has been measured and analysed. 3) For the CCD systems tested, there is no unique formula to represent the correlation over the entire CCD frame between the deviation from linearity and the pixel value, i.e., different pixel has different correction even though their pixel values are the same. 4) For the BFOSC (BAO Faint Object Spectrograph Camera) Loral CCD camera and the Tek CCD camera at the 1.56-m reflector, blooming (bleeding) happens long before saturation, and we suspect whether it could have resulted from the charge transfer efficiency (CTE) n
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| 关 键 词： | 电荷耦合器件 照相机 光学天文台 仪器 |
A Performance Study of the CCD Cameras of the Joint Laboratory of Optical Astronomy |
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| Bao-An Yao,Chun-Sheng Zhang and Qing Lin
Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai
Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing .A Performance Study of the CCD Cameras of the Joint Laboratory of Optical Astronomy[J].Chinese Journal of Astronomy and Astrophysics,2004,4(4):397-410. |
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| Authors: | Bao-AnYao Chun-ShengZhang QingLin |
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| Institution: | [1]ShanghaiAstronomicalObservatory,ChineseAcademyofSciences,Shanghai200030 [2]PurpleMountainObservatory,ChineseAcademyofSciences,Nanjing210008 |
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| Abstract: | A performance study of several CCD cameras of the Chinese Joint Laboratory of Optical Astronomy (CJLOA) is presented. The main results are: 1) We propose a modified classical method to analyse the linearity of CCD cameras. This method is more sensitive and accurate as well as more intuitive, especially in measuring around the 0.1%-0.2% range of nonlinearity. 2) To illustrate the advantage of the method, the linearity performance of the CCD cameras at CJLOA has been measured and analysed. 3) For the CCD systems tested, there is no unique formula to represent the correlation over the entire CCD frame between the deviation from linearity and the piixel value, i.e., different pixel has different correction even though their pixel values are the same. 4) For the BFOSC (BAO Faint Object Spectrograph Camera) Loral CCD camera and the Tek CCD camera at the 1.56-m reflector, blooming (bleeding) happens long before saturation, and we suspect whether it could have resulted from the charge transfer efficiency (CTE) not being high enough. |
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| Keywords: | instrumentation: detectors - telescopes |
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