中国科学院云南天文台机构知识库

为了在1 m红外太阳望远镜多通道高分辨率成像观测系统中实现多个波段太阳图像的同步高分辨率统计重建,需要1 m太阳望远镜多个观测通道图像采集系统同步。研究了如何采用CCD相机外触发工作模式、计算机PCI总线硬件中断技术和全球定位系统时间相结合实现1 m太阳望远镜多个观测通道图像的同步采集,并在现有的Hα和Ti O两个成像观测通道上搭建实验平台。通过一系列的波形时序测试,数据记录和分析等实验证明本文所采用的这一数据同步采集技术能满足1 m太阳望远镜多个观测通道图像的同步采集要求。

In order to achieve synchronized multi-wavelength high-resolution image reconstruction with the multi-channel high-resolution observation system on the NVST (New Vacuum Solar Telescope) of the Yunnan Observatories,data of the multiple channels need to be synchronously recorded. In this paper we present our study of realization of the needed synchronous recording. Our approach combines externally triggered working modes of the CCD cameras,technologies of interrupting computer PCI bus hardware,and the GPS time system. Using the approach we have built a system to achieve synchronized data acquisition with the NVST multi-channel observation system. In this paper we also introduce an experimental platform built on the existing Hα and TiO imaging channels. Through a series of experiments,such as timing sequence analyses of waveforms,data recording,and data analyses,we show that our system can meet the requirements of synchronous recording with the NVST multi-channel observation system.