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Sandra Dawson - TMT Update


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Sandra Dawson - TMT Update

  1. 1. Astronomy’s NextGenerationObservatorySandra DawsonNovember 18, 2012
  2. 2. The observatories of Mauna KeaThe high, dry, stable air of Mauna Kea, and the dark skies make thisone of the best places in the world to do astronomy. Mauna Kea is alsoa sacred place of legend to Hawaiians.
  3. 3. Exciting Astronomy from Mauna Kea Keck and CFHT: coldest known star: a brown dwarf with about the same temperature as a hot cup of coffee. Thats cool enough to begin crossing the blurry line between small cold stars and big hot planets. Keck: the discovery of a planet that could have liquid water on its surface. Subaru - red star-forming galaxies around a galaxy cluster situated four billion light years away from Earth; they may demonstrate the dramatic evolution of galaxies in the environment surrounding the cluster. Gemini – new research revealing the history of the outer Solar System by measuring the mutual orbits of extremely widely separated binaries located beyond Neptune in the icy Kuiper Belt.
  4. 4. Glowing Young Planets• This star has three orbiting planets - the first imaged planetary system!• Planets are much fainter than their parent star, so are difficult to image• Why are these pictures possible? • Advanced observing techniques Three planets were used to block the star’s light orbiting HR8799 • Observations were repeated over Keck Observatory infrared image of star years, confirming planetary HR8799 and three orbiting planets with orbital motion directions indicated by arrows. The light from the star was subtracted, but a lot of ‘noise’ • The planets are young and hot, remains. and therefore glow more brightly than by reflected starlight alone
  5. 5. Evolution of Modern Telescopes THIRTY METER TELESCOPE TMT.PMO.PRE.09.018.DR 4Project Website: F03
  6. 6. Segment #1 Prototype
  7. 7. TMT.PMO.PRE.10.034.REL05 7The Information Herein is Subject to the Restrictions Contained on the Cover Page of this Document
  8. 8. THIRTY METER TELESCOPE Revolution in Image Quality – Adaptive OpticsFor example: Keck Laser Guide Star Facility Project Website:
  9. 9. Adaptive Optics THIRTY METER TELESCOPE Taking the “twinkle twinkle” out of that little star... Large telescope image quality is limited by the atmosphere Adaptive optics is a technique that measures the atmospheric changes and corrects them as they occur, thus eliminating them This must be done very rapidly ~ 500 times/secondProject Website:
  10. 10. THIRTY METER TELESCOPE NGC 1569 Hubble NIC2 SSC B F160W 15 pc(Field of view: 6” x 6”) Project Website:
  11. 11. THIRTY METER TELESCOPE NGC 1569 Keck AO SSC B IHK’ 15 pc(Field of view: 6” x 6”) Project Website:
  12. 12. Enables studies of “weather” on Uranus
  13. 13. TMT: Key Science THIRTY METER TELESCOPE Formation of stars and planets Nature of extra-solar planets Presence of life elsewhere in the Universe Nature and composition of the Universe Formation of the first stars and galaxies Evolution of galaxies Relationship between black holes and their galaxies 11Project Website:
  14. 14. Conceptual Design of TMT Observatory THIRTY METER TELESCOPE Project Website:
  15. 15. THIRTY METER TELESCOPE Mahalo! Project Website: Join TMT on : @TMTHawaiiProject Website: