NAOC 1m反射望远镜CCD相机的性能研究(英文)  

PERFORMANCE STUDY OF THE CCD CAMERA ON THE 1-m REFLECTOR AT NAOC

作　　者：姚保安[1] 王叔和[1] 唐正宏[1] 

机构地区：[1]中国科学院上海天文台,上海200030

出　　处：《中国科学院上海天文台年刊》2007年第1期80-88,共9页Annals Shanghai Astronomical Observatory Chinese Academy of Sciences

摘　　要：研究了国家天文台兴隆观测基地1m反射望远镜新安装的VersArray1340×1300B CCD照相机的性能。它有几乎没有图案的良好本底(bias),极低的读出噪声和暗流。用平场序列露光来检测其线性时,能得到线性良好的转移曲线(transfer curve)。但是,不论在平场露光(面光源)还是在恒星(点光源)的观测中,当像元值约高于55000adu时(增益3.7e^-/adu),都会产生溢出。此时CCD并未满井。因此,使用它做点扩散函数分析研究时,要避免使用太亮的星像。不过,由于电荷守恒原理,对产生溢出的孤立亮星像,仍然可以做孔径测光。此外,该相机的快门函数也已测定。A performance study of the new VersArray 1340× 1300B CCD camera attached to the 1-m reflector at Xinglong Observatory, National Astronomicatl Observatories （NAOC） is presented. The camera has a good bias with very weak pattern, low readout noise and low dark. The linearity appears to be very good on the transfer curve when the dome fiat field exposures are used to cheek it. However, both in dome fiat field （extended light source） exposures and in real star （point light source） observations, blooming occurs in the fiat frames or inside bright star images when the pixel value is higher than about 55000 adu （ at a gain of 3.7e^-/adu）, so the very bright star images should be avoided in constructing the point spread function. But the aperture photometry of bright point sources （stars） may be still feasible due to the principle of charge conservation. In addition, the shutter function of the camera is also determined.

关 键 词：仪器 探测器 CCD相机 快门函数 

分 类 号：P111.21[天文地球—天文学] TN386.5[电子电信—物理电子学]