Earth, Moon, and Planets

, Volume 104, Issue 1–4, pp 77–82 | Cite as

Advanced Technology Solar Telescope

  • Stephen L. KeilEmail author
  • Thomas R. Rimmele
  • Jeremy Wagner
  • The ATST Team


High-resolution studies of the Sun’s magnetic fields are needed for a better understanding of the fundamental processes responsible for solar variability. The generation of magnetic fields through dynamo processes, the amplification of fields through the interaction with plasma flows, and the destruction of fields are poorly understood. There is incomplete insight into physical mechanisms responsible for chromospheric and coronal structure and heating, causes of variations in the radiative output of the Sun, and mechanisms that trigger flares and coronal mass ejections. Progress in answering these critical questions requires study of the interaction of the magnetic field and convection with a resolution sufficient to observe scale fundamental to these processes. The planned 4 m aperture ATST will be a unique scientific tool, with excellent angular resolution, a large wavelength range, and low scattered light. With its integrated adaptive optics, the ATST will achieve a spatial resolution nearly 10 times better than any existing solar telescope. The ATST design and development phase began in 2001 and it is now ready to begin construction in 2009.


High resolution solar observations Solar magnetic fields Solar dynamo Solar telescope design 



The ATST project design and develop phase is funded by the National Science Foundation through the cooperative agreement with the Association of University for Research in Astronomy. In addition to the NSO based project team, contribution to the ATST science and design have come from the High Altitude Observatory, the New Jersey Institute of Technology, the University of Hawaii, the University of Chicago, Germany, Italy, Japan the Netherlands, Norway, Spain, Sweden, the U.K., and the ATST Science Working group (


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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Stephen L. Keil
    • 1
    Email author
  • Thomas R. Rimmele
    • 1
  • Jeremy Wagner
    • 1
  • The ATST Team
    • 1
  1. 1.National Solar ObservatorySunspotUSA

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