KMS National Astronomical Observatories, CAS
| Fast Dark Signal Measurements of SVOM VT CCDs Using the Vertical Gradient of Dark Field Images | |
| Pan, Yue1,2; Fan, Xuewu1; Zhao, Hui1; Qiu, Yulei3; Gao, Wei1; Zhang, Jian1 | |
| 2021-04-01 | |
| Source Publication | PHOTONICS
 |
| Volume | 8Issue:4Pages:9 |
| Abstract | This paper describes a fast technique for estimating the dark signals of the charge coupled devices (CCDs) of the visible telescope (VT) onboard the space multi-band variable object monitor (SVOM). It is based on the vertical gradient in the dark field images of the frame transfer CCDs. During the process of frame clear, exposure, frame transfer and readout, the characteristic of dark signal accumulation is analyzed firstly. Next, the linear fitting method is used to fit the signal level of the dark field image in the vertical direction, and the slope of the fitting line represents the dark signal factor. This technique only needs one dark field image and can be used for simple and efficient dark signal measurements of frame transfer CCDs. Besides, an experiment of detecting dark signals as a function of temperature based on the fast technique has been carried out. Making use of the Shockley-Hall-Read theory, two curve fitting formulas are adopted to the experimental results for VT Advanced Inverted Mode Operation (AIMO) CCD and VT Non-Inverted Mode Operation (NIMO) CCD respectively. The experimental results and the formulas are used to determine the optimal on-orbit cooling temperature of VT CCDs. |
| Keyword | charge coupled device (CCD) CCD characterization dark signal vertical gradient SVOM VT |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| DOI | 10.3390/photonics8040132 |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[61107008] ; National Natural Science Foundation of China[61105017] |
| Funding Organization | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| WOS Research Area | Optics |
| WOS Subject | Optics |
| WOS ID | WOS:000643501200001 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.bao.ac.cn/handle/114a11/78144 |
| Collection | 中国科学院国家天文台 |
| Corresponding Author | Fan, Xuewu |
| Affiliation | 1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian 710119, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| Recommended Citation GB/T 7714 | Pan, Yue,Fan, Xuewu,Zhao, Hui,et al. Fast Dark Signal Measurements of SVOM VT CCDs Using the Vertical Gradient of Dark Field Images[J]. PHOTONICS,2021,8(4):9. |
| APA | Pan, Yue,Fan, Xuewu,Zhao, Hui,Qiu, Yulei,Gao, Wei,&Zhang, Jian.(2021).Fast Dark Signal Measurements of SVOM VT CCDs Using the Vertical Gradient of Dark Field Images.PHOTONICS,8(4),9. |
| MLA | Pan, Yue,et al."Fast Dark Signal Measurements of SVOM VT CCDs Using the Vertical Gradient of Dark Field Images".PHOTONICS 8.4(2021):9. |
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