Pupil remapping for high contrast astronomy: results from an optical testbed.
Pupil remapping for high contrast astronomy: results from an optical testbed.
复制标题
高对比度天文学的瞳孔重新映射：光学测试台的结果。
作者：
T. Kotani;S. Lacour;G. Perrin;G. Robertson;P. Tuthill
类地行星的直接成像和表征是当代天体物理学中最受欢迎的奖项之一，然而，目前的光学仪器提供的动态范围不足以克服该行星与其主恒星之间的巨大对比差异。相干单模光纤提供了新的机遇，其技术发展受到电信行业近红外需求的推动。本文提出了一种利用相干波导重新绘制望远镜光瞳几何图形的仪器的新设想。它将(I)将望远镜的整个光瞳注入到单模光纤阵列中，(Ii)重新排列光瞳，以便能够准确地测量条纹，以及(Iii)允许图像重建，以便完全消除大气模糊。在这里，我们提供了一个实验室实验，其目标是验证支持我们提出的方法的理论概念。我们成功地证实，我们可以通过使用单模光纤的光瞳重新映射仪来恢复模拟的天体物理对象(在本例中是双星)的图像。
The direct imaging and characterization of Earth-like planets is among the most sought-after prizes in contemporary astrophysics, however current optical instrumentation delivers insufficient dynamic range to overcome the vast contrast differential between the planet and its host star. New opportunities are offered by coherent single mode fibers, whose technological development has been motivated by the needs of the telecom industry in the near infrared. This paper presents a new vision for an instrument using coherent waveguides to remap the pupil geometry of the telescope. It would (i) inject the full pupil of the telescope into an array of single mode fibers, (ii) rearrange the pupil so fringes can be accurately measured, and (iii) permit image reconstruction so that atmospheric blurring can be totally removed. Here we present a laboratory experiment whose goal was to validate the theoretical concepts underpinning our proposed method. We successfully confirmed that we can retrieve the image of a simulated astrophysical object (in this case a binary star) though a pupil remapping instrument using single mode fibers.
Lucky Imaging 中的点扩散函数和短时间尺度上视宁度的变化
影响因子：
6.5
作者：
Baldwin J
通讯作者：
Baldwin J