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Sources and Scintillations pp 255–259Cite as

Extending the Observable Zenith Angle of Fast Using an Offset Feed

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Abstract

The five hundred meter aperture spherical radio telescope is will use an active sphericalreflector. When the zenith scan angle is changed, the illuminated part of the reflecting surface ismade to fit a paraboloid of revolution in real time by active control. The maximum zenith scan angle❘ ωmax ❘ of FAST is 30° under conditions of the geometry selected in order that the feed does notilluminate the ground. The result of this paper shows that the maximum zenith scan angle ❘ ωmax ❘can be extended to 69° by offsetting the feed.

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References

  • Kildal, Per-Sim, et al.: 1994, The Arecibo Upgrading: Electrical Design and Expected Performance of The Dual-Reflector Feed System, PIEEE 82(5) May, 714-724.

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  • Peng, Bo, et al.: 1996, Proceedings Workshop on Large Antennas in Radio Astronomy, WWP 110, 151.

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  • Qiu, Yuhai: 1998, A Novel Design for A Giant Arecibo-Type Spherical Radio Telescope With An Active Reflector, MNAS 301, 827–830.

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Author information

Authors and Affiliations

  1. Beijing Astronomical Observatory, National Astronomical Observatories, CAS, Beijing, 100012, China

    R. Nan & B. Peng

  2. State Key Laboratory on Microwave and Digital Communication, The Department of Electronic Engineering, Tsinghua University, Beijing, 100084, China

    Li Guoding

Authors
  1. Li Guoding
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  2. R. Nan
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  3. B. Peng
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Editor information

Editors and Affiliations

  1. ASTRON, Dwingeloo and University of Amsterdam, The Netherlands

    R. Strom

  2. Beijing Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, China

    P. Bo

  3. Research Centre for Theoretical Astrophysics, University of Sydney Australia Telescope National Facility, CSIRO, Australia

    M. Walker

  4. Beijing Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, China

    N. Rendong

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© 2001 Springer Science+Business Media Dordrecht

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Guoding, L., Nan, R., Peng, B. (2001). Extending the Observable Zenith Angle of Fast Using an Offset Feed. In: Strom, R., Bo, P., Walker, M., Rendong, N. (eds) Sources and Scintillations. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-1001-6_48

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  • DOI: https://doi.org/10.1007/978-94-010-1001-6_48

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-3879-9

  • Online ISBN: 978-94-010-1001-6

  • eBook Packages: Springer Book Archive

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