• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied optics >Performance of the 37-element solar adaptive optics for the 26 cm solar fine structure telescope at Yunnan Astronomical Observatory
【24h】

Performance of the 37-element solar adaptive optics for the 26 cm solar fine structure telescope at Yunnan Astronomical Observatory

机译：云南天文台26厘米太阳精细结构望远镜使用37元素太阳自适应光学元件的性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A 37-element solar adaptive optics system, which consists of a fine tracking loop with a tip/tilt mirror and a correlation tracker, and a high-order correction loop with a 37-element deformable mirror, a correlating Shack-Hartmann wavefront sensor, and a real-time controller, was built and installed at the 26 cm solar fine structure telescope of the Yunnan Astronomical Observatory in 2009. In this system, the absolute difference algorithm is used. A new architecture with field-programmable gate array (FPGA) and digital signal processor (DSP) for the real-time controller based on systolic array and pipeline was developed. The computational latencies of the fine tracking loop and high-order correction loop are about 35 and 100 (mu)s, respectively. The tracking residual root-mean-square error is less than 0.1 arcsec, and the wavefront residual root-mean-square error is about 0.05 wavelengths (lambda velence 550 nm) after correction. The observational results show that the contrast and resolution of the solar images are improved after the correction by this adaptive optics system.
机译：一个由37个元素组成的太阳自适应光学系统，包括一个带尖端/倾斜镜和相关跟踪器的精细跟踪环路，以及一个具有37个元素变形镜，一个相关的Shack-Hartmann波前传感器的高阶校正环路，并于2009年在云南天文台26厘米太阳精细结构望远镜上安装并安装了实时控制器。在该系统中，使用了绝对差算法。针对基于脉动阵列和流水线的实时控制器，开发了一种具有现场可编程门阵列（FPGA）和数字信号处理器（DSP）的新架构。精细跟踪循环和高阶校正循环的计算延迟分别约为35和100μs。校正后，跟踪残留均方根误差小于0.1 arcsec，波前残留均方根误差约为0.05个波长（λ550纳米）。观测结果表明，通过这种自适应光学系统进行校正后，太阳图像的对比度和分辨率得到了改善。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号