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20 July 2010 Second-earth imager for TMT (SEIT): a proposal and concept Description
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Thirty Meter Telescope (TMT) will see its first light in 2018. We propose Second-Earth Imager for TMT (SEIT) as a possible next generation instrument of TMT. The main purpose of the SEIT is direct detection of habitable planets around M-type stars. The large aperture of the TMT allows us to directly image very faint planets close to the bright central stars. In general the ground-based telescopes will suffer from speckles caused by static aberrations and high sky background, which prevent us to directly detect reflective light from (super) Earths. Here, we propose a new concept for both speckle and sky background suppressions by the use of an interferometric technique. The exozodiacal light is also suppressed when it is a symmetric source. Thus, this concept suppresses symmetric sources and then enhances the contrast of the SITE. In this paper, we will show the concept of the SEIT and our preliminary simulation results.
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Taro Matsuo and Motohide Tamura "Second-earth imager for TMT (SEIT): a proposal and concept Description", Proc. SPIE 7735, Ground-based and Airborne Instrumentation for Astronomy III, 773584 (20 July 2010);


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