Astronomical image restoration through atmosphere turbulence by lucky imaging

摘要：

In this paper, we develop a lucky imaging system to restore astronomical images through atmosphere turbulence. Our system takes very short exposures, on the order of the atmospheric coherence time. The rapidly changing turbulence leads to a very variable point spread function (PSF), and the variability of the PSF leads to some frames having better quality than the rest. Only the best frames are selected, aligned and co-added to give a final image with much improved angular resolution. Our system mainly consists of five parts: preprocessing, frame selection, image registration, image reconstruction, and image enhancement. Our lucky imaging system has been successfully applied to restore the astronomical images taken by a 1.23m telescope. We have got clear images of moon surface and Jupiter, and our system can be demonstrated to greatly improve the imaging resolution through atmospheric turbulence.

关键词： Lucky imaging image restoration image registration astronomical imaging

作者: Shixue Zhang Yuanhao Wu Jinyu Zhao Jianli Wang

作者单位: Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences,Changchun 130033, P.R. China

会议类型: 国际会议

会议名称: Third International Conference on Digital Image Processing(ICDIP 2011)(第三届数字图像处理国际会议)

会议地点: 成都

会议语种:英文

页码: 54-58

在线出版日期: 2011-04-15（万方平台首次上网日期，不代表论文的发表时间）