Influence of Panel Gaps on the System Noise Temperature of FAST

Details Influence of Panel Gaps on the System Noise Temperature of FAST Influence of Panel Gaps on the System Noise Temperature of FAST

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001chjaa...1..190s&link_type=abstract

Chinese Journal of Astronomy & Astrophysics, Vol. 1, p. 190-194

Astronomy and Astrophysics

Astrophysics

Telescopes, Methods: Analytical, Energy Leakage

Scientific paper

A Five-hundred-meter Aperture Spherical Telescope (FAST), the largest single dish in the world, is proposed to be built in one of the karst depressions in Guizhou province. The main spherical reflector is to consist of about two thousand small panels, which can be adjusted to fit a paraboloid in real time. There are many slit-like gaps across the aperture due to manufacturing error, thermal effects and deviations between a sphere and a paraboloid. The influence of the energy leakage of the narrow gaps on the system noise temperature of the FAST reflector is discussed.

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