15 June 2006 Estimated performance of a symmetric nulling coronagraph for exoplanet imaging
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Abstract
The direct detection of the earth-similar planets nearby bright stars needs high-contrast imaging. We proposed a nulling coronagraph that can, in principle, totally cancel the on-axis point-source starlight for broadband high-contrast imaging. The nulling coronagraph also features close angular distance imaging and high throughput. Equipped with a telescope with only 1.5-m aperture size, it has the potentiality to be able to resolving and directly detecting earth-similar planets at 0.1" (1 λ/D) close-distance in the visible wavelength range. The requirement for a small telescope is a significant advantage for future space missions. We discuss the working principle, instrument realization, error and sensitivity analysis, and the estimated performance of the nulling coronagraph.
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D. Ren, D. Ren, E. Serabyn, E. Serabyn, "Estimated performance of a symmetric nulling coronagraph for exoplanet imaging", Proc. SPIE 6265, Space Telescopes and Instrumentation I: Optical, Infrared, and Millimeter, 62653X (15 June 2006); doi: 10.1117/12.674163; https://doi.org/10.1117/12.674163
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