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首页> 外文会议>Conference on Advances in Stellar Interferometry >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
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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Richardson-Lucy和正则建筑块方法，具有LBT的孔径合成成像：从LBT LINC-Nirvana数据重建衍射限制图像

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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：正规化和空间变建筑砌块的方法允许衍射极限孔径合成图像的重构从大双筒望远镜（LBT）LINC必杀技数据。用22.8米单碟望远镜的衍射限制的分辨率的图像可以如果原始图像是在几个不同的小时角度拍摄被重建。计算机生成和实验室LBT干涉进行了模拟类似于能够与LINC必杀技光束组合仪器获得的数据。从模拟的干涉，衍射限制的图像被与该正规化建筑砌块的方法，它是建筑砌块方法的扩展重建。我们比较积木重建与理查森 - 露西（RL）方法和有序子集期望最大化（OSEM）方法获得的图像。我们的图像重建研究使用计算机模拟J波段和实验室H-带与和分别的J模拟总大小= 16至18 H = 16至19，一个星系的原始数据进行的。一个图像中的最暗的结构的具有J个〜25的亮度。等晕贴剂内的模拟参考星具有J = 20的大小 - 21和H = 19，所有这三种方法都能够重建类似质量的衍射限制图像。

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