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S. K. King and TAOS team Institute of Astronomy and Astrophysics, Academia Sinica

P42: TNO, Occultation, and High Angular Resolution Astronomy Taiwanese-American Occultation Survey. A serendipitous occultation survey for trans-neptunian objects (TNO) Three or Four robotic telescopes since 2005 50 cm, F/1.9, FOV ~ 1  .7  1  .7, Monitoring ~1,000 stars per field

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S. K. King and TAOS team Institute of Astronomy and Astrophysics, Academia Sinica

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  1. P42: TNO, Occultation, andHigh Angular Resolution AstronomyTaiwanese-American Occultation Survey • A serendipitous occultation survey for trans-neptunian objects (TNO) • Three or Four robotic telescopes since 2005 • 50 cm, F/1.9, FOV ~ 1.7  1.7, Monitoring ~1,000 stars per field • Running at 5 Hz (a typical comet size) rate • Fresnel diffraction is involved • Is capable of detecting an exoplanet transit event • May provide information of a background star at high angular resolution • One meter class telescope array in 5 years (TAOS 2) S. K. King and TAOS team Institute of Astronomy and Astrophysics, Academia Sinica

  2. TAOS Project (Taiwanese-American Occultation Survey) (Photo by H.C. Lin, Dec. 2004)

  3. TAOS Observe an Exoplanet Transit As a test, a predicted transit of an exoplanet XO-2b was observed by the TAOS telescopes on Feb. 9, 2008. The transit depth ~1.15% was well resolved after de-trending and binning. The transit duration was 145 minutes. A 45-minute data in the middle was lost due to manual error. A light curve of a comparison star is shown at the bottom. (Figure prepared by Pavlos Protopapas & Dae-Won Kim.)

  4. The TAOS Team Institute of Astronomy & Astrophysics and Institute of Earth Sciences, Academia Sinica, Taiwan Typhoon Lee(IES PI), Chi-Yuan(IAA PI), Sun-Kun King, Andrew Wang, Shang-Yu Wang, Chih-Yi Wen Institute of Astronomy, National Central University, Taiwan Wen-Ping Chen, Yung-Shin Chang, Soumen Mondal, Kiwi Zhang Harvard-Smithsonian Center for Astrophysics, USA Charles Alcock, Matthew Lehner, Federica B. Bianco, Rahul Dave The Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory, USA Kem Cook Yonsei University, Department of Astronomy, South Korea Yong-Ik Byun Department of Physics and Astronomy, University of Pennsylvania, USAJoseph Giammarco University of California, Berkeley, USAImke de Pater, John Rice Stanford Linear Accelerator Center, USA Stuart Marshall Steward Observatory, The University of Arizona, USATim Axelrod Ames Research Center, National Aeronautics & Space Administration, USAJack Lissauer

  5. The TAOS Team

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