Apodized Pupil Lyot Coronagraphs for Arbitrary Telescope Apertures
Apodized Pupil Lyot Coronagraphs for Arbitrary Telescope Apertures
复制标题
适用于任意望远镜孔径的变迹瞳孔 Lyot 日冕仪
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
R. Soummer
中科院分区：
文献类型：
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作者：
R. Soummer
在高动态范围成像的背景下，这项研究为理解变迹的光瞳Lyot冠状图提供了一个突破，使其可用于任意孔径形状。这些新的解决方案可立即应用于当前的地面日冕摄影研究(Gemini，VLT)和现有仪器(高级光电系统Lyot项目)。它们还提供了为类地行星发现者寻找轴上设计的可能性。无遮挡孔径的情况已经由C.Aime等人解决了。和R.Soummer等人。在一般情况下，特别是对于中心遮挡的孔，存在具有相同性质的解析解。色度效应可以通过数值优化来减轻。解析解和数值解的结合使得能够研究完整的参数空间(中心阻塞、变迹吞吐量、掩模大小、带宽和Lyot停止大小)。
In the context of high dynamic range imaging, this study presents a breakthrough for the understanding of apodized pupil Lyot coronagraphs, making them available for arbitrary aperture shapes. These new solutions find immediate application in current, ground-based coronagraphic studies (Gemini, VLT) and in existing instruments (Advanced Electro-Optical System Lyot Project). They also offer the possibility of a search for an on-axis design for the Terrestrial Planet Finder. The unobstructed aperture case has already been solved by C. Aime et al. and R. Soummer et al. Analytical solutions with identical properties exist in the general case and, in particular, for centrally obscured apertures. Chromatic effects can be mitigated with a numerical optimization. The combination of analytical and numerical solutions enables the study of the complete parameter space (central obstruction, apodization throughput, mask size, bandwidth, and Lyot stop size).