论文标题
用于扩展来源的准带限制的冠状
Quasi Band-Limited Coronagraph for Extended Sources
论文作者
论文摘要
我们为高吞吐量的lyot型冠状动物提出了一类分级的冠状“振幅”图像掩模，该图像掩盖了lyot型的冠状动脉，该图像从延伸源周围的环形区域传输光线，并从其他地方抑制以极高比例的光。该区域的内部半径与其外部半径相当。面具的设计是使用M.J. Kuchner和W.A. Traub（“带有限制的”掩码）和D.Slepian的最佳方法的方法设计的想法。我们的面具的一种潜在应用是在太阳引力透镜的帮助下直接对外部行星进行直接高分辨率成像，那里的行星“爱因斯坦环”图像的明显半径是弧形秒的顺序，并且与太阳和Solar Corona的明显半径相当。 关键字：冠状动脉，最佳频带限制，易人行星，太阳引力镜头
We propose a class of graded coronagraphic "amplitude" image masks for a high throughput Lyot-type coronagraph that transmits light from an annular region around an extended source and suppresses light, with extremely high ratio, from elsewhere. The interior radius of the region is comparable with its exterior radius. The masks are designed using an idea inspired by approach due M.J. Kuchner and W.A. Traub ("band-limited" masks) and approach to optimal apodization by D.Slepian. One potential application of our masks is direct high-resolution imaging of exo-planets with the help of the Solar Gravitational Lens, where apparent radius of the "Einstein ring" image of a planet is of the order of an arc-second and is comparable with the apparent radius of the sun and solar corona. Keywords: Coronagraphy, Optimal Band-Limiting, Exo-Planets, Solar Gravitational Lens
