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arXiv 1609.05147astro-ph.IM
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可见光中的高对比度成像:大型双筒望远镜的首次实验结果

High Contrast Imaging in the Visible: First Experimental Results at the Large Binocular Telescope

F. Pedichini, M. Stangalini, A. Ambrosino, A. Puglisi, E. Pinna, V. Bailey, L. Carbonaro, M. Centrone, J. Christou, S. Esposito, J. Farinato, F. Fiore, E. Giall… 展开作者

F. Pedichini, M. Stangalini, A. Ambrosino, A. Puglisi, E. Pinna, V. Bailey, L. Carbonaro, M. Centrone, J. Christou, S. Esposito, J. Farinato, F. Fiore, E. Giallongo, J. M. Hill, P. M. Hinz, L. Sabatini

摘要:

2014年2月,SHARK-VIS(System for High Contrast And Coronography from R to K at VISual bands)Forerunner,一个在可见光波段工作的高对比度实验成像仪,安装在LBT(Large Binocular Telescope)。在这里,我们报告的第一个结果,最近获得的天空测试。这些结果显示了LBT ExAO(极端自适应光学)系统在可见光波长下在空间分辨率和对比度方面的极好性能。与Amara等人(2012)所做的类似,我们使用SHARK-VIS Forerunner数据定量评估造影剂增强。这是通过在采集的数据中注入几个不同的合成微弱物体并应用ADI(角差分成像)技术来完成的。在630 nm处,当与恒星的角距大于100 mas时,可以得到$5 \times 10^{-5}$量级的对比度。这些结果进行了讨论,在未来的发展SHARK-VIS和相比,由其他高对比度成像仪在类似的波长下工作。

英文摘要:

In February 2014, the SHARK-VIS (System for High contrast And coronography from R to K at VISual bands) Forerunner, a high contrast experimental imager operating at visible wavelengths, was installed at LBT (Large Binocular Telescope). Here we report on the first results obtained by recent on-sky tests. These results show the extremely good performance of the LBT ExAO (Extreme Adaptive Optics) system at visible wavelengths, both in terms of spatial resolution and contrast achieved. Similarly to what was done by (Amara et al. 2012), we used the SHARK-VIS Forerunner data to quantitatively assess the contrast enhancement. This is done by injecting several different synthetic faint objects in the acquired data and applying the ADI (angular differential imaging) technique. A contrast of the order of $5 \times 10^{-5}$ is obtained at 630 nm for angular separations from the star larger than 100 mas. These results are discussed in light of the future development of SHARK-VIS and compared to those obtained by other high contrast imagers operating at similar wavelengths.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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