| Test for Dynamic Range of scientific CCD imaging system | |
| Liang, Shaolin1,2; Wang, Yongmei1,2; Mao, Jinghua1; Jia, Nan1; Shi, Entao1 | |
| Department | 空间环境部 |
| Source Publication | FIFTH CONFERENCE ON FRONTIERS IN OPTICAL IMAGING TECHNOLOGY AND APPLICATIONS (FOI 2018) |
| 2018 | |
| Volume | 10832 |
| Pages | UNSP 1083205 |
| DOI | 10.1117/12.2505774 |
| Language | 英语 |
| ISSN | 0277-786X |
| ISBN | 978-1-5106-2290-6 |
| Abstract | Dynamic Range is an important index to evaluate the performance of scientific CCD imaging system, which reflects the detection capability to the signal. At present, the description of DR is mainly expressed by the ratio of CCD full well capacity to readout noise at home and abroad. On the basis of clarifying the imaging process of scientific CCD, a method that defines linearity critical point as the last point where the Linearity Error doesn't exceed -3%, minimum exposure point as the point where the SNR equals to 1, then precisely expresses and calculates DR is introduced. Afterwards in the lab, 100 light and 100 dark images of CCD at different exposure time are collected by using the integrating sphere and other equipment, the relationship between the signal and exposure time is calculated to find out the linearity critical point and minimum exposure point and calculate the DR of CCD. The result shows that the DR of the measured CCD is 61.76dB, which corresponds to the theoretical analysis and verifies the validity of the test. Finally, the factors influencing the DR of CCD are analyzed, the advice to improve the DR is introduced. |
| Keyword | scientific CCD Dynamic Range Linearity Error SNR linearity critical point minimum exposure point |
| Conference Name | 5th Conference on Frontiers in Optical Imaging Technology and Applications (FOI) |
| Conference Date | JUL 25-27, 2018 |
| Conference Place | Hefei, PEOPLES R CHINA |
| Indexed By | EI ; CPCI |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://ir.nssc.ac.cn/handle/122/6686 |
| Collection | 空间环境部 |
| Affiliation | 1.National Space Science Center, Chinese Academy of Sciences, Beijing; 100190, China; 2.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing; 100049, China |
| Recommended Citation GB/T 7714 | Liang, Shaolin,Wang, Yongmei,Mao, Jinghua,et al. Test for Dynamic Range of scientific CCD imaging system[C],2018:UNSP 1083205. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| 20181083205.pdf（589KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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