The Parkes-Tidbinbilla interferometer

Astronomy and Astrophysics – Astronomy

Scientific paper

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Astrometry, Pulsars, Radio Interferometers, Systems Engineering, Astronomical Observatories, Radio Telescopes, Stellar Motions

Scientific paper

The Parkes-Tidbinbilla Interferometer is a radio-linked interferometer using the 64 m telescope at Parkes together with one of the NASA antennas (34 m or 64 m) at Tidbinbilla. With a baseline of 275 km, it is currently the world's longest real-time interferometer, and is usable at frequencies of 1.7, 2.3, and 8.4 GHz to give angular resolutions of 0arcsec.13, 0arcsec.09, and 0arcsec.03, respectively, with a sensitivity of 1 - 3 mJy rms in 3 - 15 minutes at a bandwidth of up to 10 MHz. The authors describe its design and construction and give some examples of astronomy programs currently being pursued using it.

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