Asymmetric Sub-Reflectors for Spherical Antennas and Interferometric Observations with an FPGA-Based Correlator

Hiroshi Takeuchi,Masaya Kuniyoshi,T Daishido,Kuniyuki Asuma,Nobuo Matsumura,Kazuhiro Takefuji,Kotaro Niinuma,Hajime Ichikawa, Riki Okubo,Akihiro Sawano,Naoya Yoshimura, Fumiyuki Fujii, Keiju Mizuno,Yukinori Akamine

Publications of the Astronomical Society of Japan（2005）

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摘要

The Nasu Radio Interferometer, consisting of eight equally spaced, 20-m diameter fixed spherical antennas, was developed for the purpose of surveying unknown variable radio sources at 1.4 GHz. An asymmetrical Gregorian sub-reflector was designed and installed on each antenna for the purpose of correcting aberrations caused by the spherical reflector. The total collecting area is $2512 \,\mathrm{m}...

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关键词

instrumentation: interferometers,radio continuum: general,techniques: interferometric

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