Research on Quantum Efficiency Calibration of SVOM VT CCDs | |
Yue, Pan; Lijuna, Dan; Zhonghana, Sun; Chaoa, Huang; Weia, Li; Fengtaoa, Wang; Huia, Zhao; Jiana, Zhang | |
2023 | |
会议名称 | 2023 Applied Optics and Photonics China: Novel Technologies and Instruments for Astronomical Imaging and Spectroscopy, AOPC 2023 |
会议录名称 | AOPC 2023: Novel Technologies and Instruments for Astronomical Imaging and Spectroscopy |
卷号 | 12965 |
会议日期 | 2023-07-25 |
会议地点 | Beijing, China |
出版者 | SPIE |
产权排序 | 1 |
摘要 | The successful achievement of the scientific objectives of the Visible Telescope (VT) in the Space Multi-band Variable Object Monitor (SVOM) mission relies heavily on high-precision quantum efficiency calibration. The calibration process for the VT CCD presents a challenge due to the requirement for extremely low radiation levels given the long integration time of the CCD. To address the difficulty in accurately measuring such low radiance, a two-step calibration method is employed. This method involves the use of two photodiodes, one positioned at the CCD location and the other in an integrating sphere. In the first step, the proportional relationship between the measured illuminance values of the two photodiodes is calibrated under high illumination conditions. This step establishes a reliable reference for subsequent calibrations. In the second step, the CCD is calibrated using the integrating sphere photodiode under low illumination conditions. The measured illuminance is then converted to the CCD position. Experimental results have demonstrated the effectiveness of this two-step calibration method, achieving a quantum efficiency calibration uncertainty of 1.7%. This approach provides a reliable and accurate means of calibrating the quantum efficiency of the CCD in the VT instrument. © 2023 SPIE. All rights reserved. |
关键词 | Charge coupled device (CCD) CCD calibration Conversion gain Quantum efficiency SVOM VT |
作者部门 | 空间光学技术研究室 |
DOI | 10.1117/12.3007801 |
收录类别 | EI |
ISBN号 | 9781510672369 |
语种 | 英语 |
ISSN号 | 0277786X;1996756X |
EI入藏号 | 20240215333276 |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://ir.opt.ac.cn/handle/181661/97147 |
专题 | 空间光学技术研究室 |
通讯作者 | Yue, Pan |
作者单位 | Xi'an Institute of Optics and Precision Mechanics of Chinese Academy of Science, Xi'an; 710119, China |
推荐引用方式 GB/T 7714 | Yue, Pan,Lijuna, Dan,Zhonghana, Sun,et al. Research on Quantum Efficiency Calibration of SVOM VT CCDs[C]:SPIE,2023. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
Research on Quantum (780KB) | 会议论文 | 限制开放 | CC BY-NC-SA | 请求全文 |
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