| タイトル | Planet detection and spectroscopy in visible light with a single aperture telescope and a nulling coronagraph |
| 著者（英） | Wallace, J. Kent; Mennesson, Bertrand; Unwin, Stephen; Shao, Michael; Liu, Duncan; Serabyn, Eugene; Beichman, Charles; Martin, Stefan; Orton, Glen; Levine, Bruce Martin; Morgan, Rhonda; Velusamy, Thangasamy |
| 発行日 | 2003-01-09 |
| 言語 | eng |
| 内容記述 | This talk describes a new concept for visible direct detection of Earth like extra solar planets using a nulling coronagraph instrument behind a 4m telescope in space. In the baseline design, a 4 beam nulling interferometer is synthesized from the telescope pupil, producing a very deep theta^4null which is then filtered by a coherent array of single mode fibers to suppress the residual scattered light. With perfect optics, the stellar leakage is less than 1e-11 of the starlight at the location of the planet. With diffraction limited telescope optics (lambda/20), suppression of the starlight to ~1e-10 is possible. The concept is described along with the key advantages over more traditional approaches such as apodized aperture telescopes and Lyot type coronagraphs. |
| NASA分類 | Astronomy |
| 権利 | Copyright |
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