Five-hundred-meter Aperture Spherical Telescope project |
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| Authors: | B Peng R Nan Y Su Y Qiu L Zhu W Zhu |
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| Institution: | (1) Beijing Astronomicad Observatory, National Astronomical Observatories, CAS, P.R. China |
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| Abstract: | A Five hundred meter Aperture Spherical Telescope (FAST) is proposed to be built in the unique karst area of southwest China,
and will act, in a sense, as a prototype for the Square Kilometer Array (SKA). It will be over twice as large as the Arecibo
telescope coupled with much wider sky coverage. Some results from site surveys for such a SKA concept are briefly reported.
Technically, FAST is not simply a copy of the existing Arecibo telescope but has rather a number of innovations. Firstly,
the proposed main spherical reflector, by conforming to a paraboloid of revolution in real time through actuated active control,
enables the realization of both wide bandwidth and full polarization capability while using standard feed design. Secondly,
a feed support system which integrates optical, mechanical and electronic technologies will effectively reduce the cost of
the support structure and control system. Pre-research on FAST has become a key project in the CAS.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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| Keywords: | Spherical telescope karst depression active reflector cablesupporting CAS – Chinese Academy of Sciences |
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