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arXiv · 0910.5355

High-contrast coronagraph for ground-based imaging of Jupiter-like planets

Jiangpei Dou·Deqing Ren·Yongtian Zhu
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Abstract

We propose a high-contrast coronagraph for direct imaging of young Jupiter-like planets orbiting nearby bright stars. The coronagraph employs a step-transmission filter in which the intensity is apodized with a finite number of steps of identical transmission in each step. It should be installed on a large ground-based telescope equipped with state-of-the-art adaptive optics systems. In that case, contrast ratios around 10^-6 should be accessible within 0.1 arc seconds of the central star. In recent progress, a coronagraph with circular apodizing filter has been developing, which can be used for a ground-based telescope with central obstruction and spider structure. It is shown that ground-based direct imaging of Jupiter-like planets is promising with current technology.

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Jiangpei Dou, Deqing Ren, Yongtian Zhu. 2009-10-28. High-contrast coronagraph for ground-based imaging of Jupiter-like planets. https://doi.org/10.1088/1674-4527/10/2/010

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