• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Advances in Stellar Interferometry pt.2 >Aperture-synthesis imaging with the LBT: Reconstruction of diffraction-limited images from LBT LINC-NIRVANA data using the Richardson-Lucy and regularized Building Block method
【24h】

Aperture-synthesis imaging with the LBT: Reconstruction of diffraction-limited images from LBT LINC-NIRVANA data using the Richardson-Lucy and regularized Building Block method

机译：使用LBT进行光圈合成成像：使用Richardson-Lucy和规范化的Building Block方法从LBT LINC-NIRVANA数据重建衍射极限图像

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

The regularized and space-variant Building Block method allow the reconstruction of diffraction-limited aperture-synthesis images from Large Binocular Telescope (LBT) LINC-NIRVANA data. Images with the diffraction-limited resolution of a 22.8 m single-dish telescope can be reconstructed if raw images are taken at several different hour angles. Computer-generated and laboratory LBT interferograms were simulated that are similar to the data which can be obtained with the LINC-NIRVANA beam combiner instrument. From the simulated interferograms, diffraction-limited images were reconstructed with the regularized Building Block method, which is an extension of the Building Block method. We compare the Building Block reconstructions to images obtained with the Richardson-Lucy (RL) method and the Ordered Subsets Expectation Maximization (OSEM) method. Our image reconstruction studies were performed with computer-simulated J-band and laboratory H-band raw data of a galaxy with simulated total magnitudes of J = 16 to 18 and H = 16 to 19, respectively. One of the faintest structures in the images has a brightness of J～25. The simulated reference stars within the isoplanatic patch have magnitudes of J = 20 - 21 and H = 19. All three methods are able to reconstruct diffraction-limited images of similar quality.
机译：正则化和空间变化的Building Block方法可以从大型双筒望远镜（LBT）LINC-NIRVANA数据重建衍射受限的光圈合成图像。如果以几个不同的小时角拍摄原始图像，则可以重建具有22.8 m单碟望远镜的衍射极限分辨率的图像。模拟计算机生成的LBT干涉图和实验室LBT干涉图，类似于使用LINC-NIRVANA光束组合仪获得的数据。从模拟干涉图中，使用正则化Building Block方法重建衍射受限的图像，这是Building Block方法的扩展。我们将Building Block重建与通过Richardson-Lucy（RL）方法和有序子集期望最大化（OSEM）方法获得的图像进行比较。我们使用计算机模拟的银河系J波段和实验室H波段原始数据进行了图像重建研究，银河系的模拟总大小分别为J = 16至18和H = 16至19。图像中最微弱的结构之一的亮度为J〜25。等平面斑块内的模拟参考星具有J = 20-21和H = 19的大小。所有这三种方法都能够重建相似质量的衍射极限图像。

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