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题名:
A Kind of Composite Shack-Hartmann Wavefront Sensor with Switchable CCD and ICCD Detectors
作者: Xuejun Zhang; Kai Wei; Changhui Rao; Yudong Zhang
出版日期: 2010
会议名称: Proceedings of the SPIE - The International Society for Optical Engineering
会议日期: 2010
通讯作者: Xuejun Zhang
中文摘要: A Shack-Hartmann WaveFront Sensor (SHWFS) with photoelectric detector which can be switched expediently between CCD and Intensified CCD (ICCD) is designed to get high detectivity or high sampling frequency according to the requirement. By switching the photoelectric detector, the Adaptive Optical System (AOS) can detect fainter stars with ICCD-based SHWFS when the atmosphere turbulence is changing slowly, and it can also work for bright stars with CCD-based SHWFS when the atmosphere turbulence is changing rapidly. The detectivities of CCD-based SHWFS and ICCD-based SHWFS are analyzed and compared in this paper according to the parameters of AOS for 1.8-meter telescope of the Yunnan Astronomical Observatory (YAO). The preliminary analysis result shows that the faintest stars which can be detected by ICCD-based SHWFS is about 3.2 magnitude dimmer than that can be detected by CCD-based SHWFS. The CCD-based SHWFS and the ICCD-base SHWFS can detect stars with magnitude of about 7 and 10 respectively.
英文摘要: A Shack-Hartmann WaveFront Sensor (SHWFS) with photoelectric detector which can be switched expediently between CCD and Intensified CCD (ICCD) is designed to get high detectivity or high sampling frequency according to the requirement. By switching the photoelectric detector, the Adaptive Optical System (AOS) can detect fainter stars with ICCD-based SHWFS when the atmosphere turbulence is changing slowly, and it can also work for bright stars with CCD-based SHWFS when the atmosphere turbulence is changing rapidly. The detectivities of CCD-based SHWFS and ICCD-based SHWFS are analyzed and compared in this paper according to the parameters of AOS for 1.8-meter telescope of the Yunnan Astronomical Observatory (YAO). The preliminary analysis result shows that the faintest stars which can be detected by ICCD-based SHWFS is about 3.2 magnitude dimmer than that can be detected by CCD-based SHWFS. The CCD-based SHWFS and the ICCD-base SHWFS can detect stars with magnitude of about 7 and 10 respectively.
收录类别: Ei ; ISTP
语种: 英语
卷号: 7655
文章类型: 会议论文
页码: 765534 (8 pp.)
内容类型: 会议论文
URI标识: http://ir.ioe.ac.cn/handle/181551/7736
Appears in Collections:自适应光学技术研究室(八室)_会议论文

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作者单位: 中国科学院光电技术研究所

Recommended Citation:
Xuejun Zhang,Kai Wei,Changhui Rao,et al. A Kind of Composite Shack-Hartmann Wavefront Sensor with Switchable CCD and ICCD Detectors[C]. 见:Proceedings of the SPIE - The International Society for Optical Engineering. 2010.
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