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19 April 2024 |
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A Unified View of Coronagraph Image Masks | | Marc J. Kuchner
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14 Dec 2003 | | Subject: | astro-ph | | Abstract: | The last few years have seen a variety of new image mask designs for diffraction-limited coronagraphy. Could there still be useful designs as yet undiscovered? To begin to answer this question, I survey and unify the Fraunhofer theory of coronagraph image masks in the context of a one-dimensional classical coronagraph. I display a complete solution to the problem of removing on-axis light assuming an unapodized entrance aperture and I introduce the attenuation function, a measure of a generic coronagraph’s off-axis performance. With these tools, I demonstrate that the masks proposed so far form a nearly complete library of image masks that are useful for detecting faint extrasolar planets. | | Source: | arXiv, astro-ph/0401256 | | Services: | Forum | Review | PDF | Favorites | |
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