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Alternative TitleControl and Image Acquisition of the Dual-FOV Terminal on Lijiang 2.4-meter Telescope
穆恒宇1,2; 王希群1,2; 马琳1; 柳光乾1
Source Publication天文研究与技术 (Astronomical Research & Technology)
Contribution Rank第1完成单位
Indexed ByCSCD
Keyword2.4m望远镜 双视场终端 位置精度 快速图像采集

为充分利用丽江2.4 m望远镜有限的卡焦接口,提高观测效率,研制了一个双视场天文观测终端,在2.4 m望远镜上实现不同视场和图像比例尺等参数进行快速测光和高分辨成像等天文观测,以满足不同的观测需求。针对该终端对滤光片轮精度和大视场光路与小视场光路切换的精度要求,以及对电子倍增电荷耦合器件(Electron-Multiplying Charge-Coupled Device, EMCCD)相机图像采集的速度要求,采用三层电机闭环控制以及多线程并发执行等技术,实现了该终端中滤光片轮、大视场光路与小视场光路切换的精确控制,以及EMCCD相机图像的快速采集与存储。最后在实验室进行了详细测试,结果表明,所设计的控制与图像采集系统能满足各项性能指标的要求。 

Other Abstract

To make full use of the limited interface of Lijiang 2.4-meter telescope's cassegrain focus and improve the efficiency of observation, a dua-field astronomical observation terminal is developed. This terminal will provide different FOV and image scales, and carry out astronomical observation such as rapid photometry and high-resolution imaging, so as to meet the different observational needs of astronomers. According to the requirements of the terminal for the precision of the filter wheel, the switch between the large and the small field optical path, and the speed requirements for the image acquisition of EMCCD camera, this paper uses threelayer closed-loop motor control and multi-thread technologies to realize the precise control of the filter wheel, the FOV switching, as well as the rapid image acquisition and saving of the EMCCD camera. Finally, a detailed test is carried out in the laboratory. According to the results, the control and image acquisition system we designed can meet the requirements of the terminal's performance indicators and functional indicators.

Funding Project国家自然科学基金[11703088]
Funding Organization国家自然科学基金[11703088]
Subject Area天文学 ; 天文学其他学科 ; 电子、通信与自动控制技术
MOST Discipline Catalogue理学 ; 理学::天文学 ; 工学 ; 工学::电子科学与技术(可授工学、理学学位)
Citation statistics
Document Type期刊论文
Corresponding Author柳光乾
Affiliation1.中国科学院云南天文台, 云南, 昆明, 650011
2.中国科学院大学, 北京, 100049
First Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
穆恒宇,王希群,马琳,等. 丽江2.4米望远镜双视场终端的控制与图像采集[J]. 天文研究与技术 (Astronomical Research & Technology),2020,17(3):384-391.
APA 穆恒宇,王希群,马琳,&柳光乾.(2020).丽江2.4米望远镜双视场终端的控制与图像采集.天文研究与技术 (Astronomical Research & Technology),17(3),384-391.
MLA 穆恒宇,et al."丽江2.4米望远镜双视场终端的控制与图像采集".天文研究与技术 (Astronomical Research & Technology) 17.3(2020):384-391.
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