讲座题目：TMT- The next generation of Extremely Large Telescopes

报告人：Jerry Nelson

时 间：5月23日（周一）下午3：00--4:00
地 点：英杰交流中心第四会议室
主持人：陈十一（教授）

报告内容摘要：
     We describe the design and capabilities of the thirty Meter Telescope (TMT), a ground based optical and infrared telescope. The telescope will be located on Mauna Kea, a 4000m mountain in Hawaii.  The telescope primary is composed of 492 close-packed hexagonal mirror segments.  The telescope will have a very capable dual-conjugate adaptive optics system (AO) that can deliver diffraction-limited images over most of the sky in the 1-2.5?m wavelength region.  The AO system will use six Na laser beacons to measure the atmospheric turbulence and two deformable mirrors to correct the atmosphere.  The telescope will have multiple science instruments, some based on adaptive optics, some seeing-limited.  The TMT is an international partnership with members:  Caltech, Canada, China, India, Japan, University of California, and possibly the NSF.

报告人简介：
    Jerry Nelson has a bachelor of science in physics from Caltech, and a PhD in elementary particle physics from the University of California in Berkeley. He is the appointed Project Scientist of TMT and currently a professor of astronomy and astrophysics in the University of California, Santa Cruz. He has earned numerous honors for his work on the Keck Telescopes in Hawaii, and has experience in experimental high-energy physics, observational astronomy, astronomical instrumentation, and telescope design. He has extensive knowledge of optics, optical support systems, kinematic design, and structural engineering. Jerry has received various awards–including the Norwegian Academy of Science and Letters’ 2010 Kavli Prize in Astrophysics?–and is a member of the National Academy of Sciences. He has authored numerous publications in physics, astronomy, instrumentation, and telescope design.