中文摘要：

斑点干涉成像技术已有几十年的历史，该技术在双星天文观测上得到了广泛的应用，取得了一系列的研究成果．上海天文台研制的一台斑点相机安装在1．56m望远镜上，主要用于双星、三星以及延展目标的斑点干涉成像观测．重点介绍斑点相机的设计、调试以及图像重建工作，并结合双星和三星目标的观测情况，给出高分辨率重建图像及角距离测量结果．实验结果表明：在1．56m望远镜上开展斑点干涉观测实验，能够接近望远镜衍射极限分辨率水平．

英文摘要：

The speckle interferometry technique has been evolving since the fundamental idea was presented almost forty years ago. This technique continues to provide the majority of astrometric data for binary systems. We have constructed a new speckle imager that collects a large number of speckle images in the detector area of Electron-Multiplying CCD. It was initially used with the 1.56-m telescope at the Shanghai Astronomical Observatory （SHAO）. In this paper, we demonstrate the design of the speckle imager. Some observation images and the reconstructed results are presented, which indicate that the high-precision results for binary and triple stars can be expected to be provided by this instrument. We prove that the new speckle imager can reach the diffraction limit resolution of the 1.56-m telescope.