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Use of the Long Baseline Array in Australia for Precise Geodesy and Absolute Astrometry

Published online by Cambridge University Press:  05 March 2013

Leonid Petrov ,
Chris Phillips ,
Alessandra Bertarini ,
Adam Deller ,
Sergei Pogrebenko  and
Ari Mujunen
Leonid Petrov*
Affiliation:
ADNET Systems, Inc./NASA GSFC, Code 610.2, Greenbelt, MD 20771, USA
Chris Phillips
Affiliation:
Australia Telescope National Facility, Australia
Alessandra Bertarini
Affiliation:
Institute of Geodesy and Geoinformation, Nussallee 17, Bonn, Germany
Adam Deller
Affiliation:
Centre for Astrophysics and Supercomputing Swinburne University, Hawthorn VIC 3123, Australia
Sergei Pogrebenko
Affiliation:
Joint Institute for Very Long Baseline Interferometry in Europe, The Netherlands
Ari Mujunen
Affiliation:
Metsähovi Radio Observatory, Helsinki University of Technology TKK, Finland
*
GCorresponding author. Email: [email protected]
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Abstract

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We report the results of a successful 12-hour 22-GHz VLBI experiment using a heterogeneous network that includes radio telescopes of the Long Baseline Array (LBA) in Australia and several VLBI stations that regularly observe in geodetic VLBI campaigns. We have determined positions of three VLBI stations, atca-104, ceduna and mopra, with an accuracy of 4–30 mm using a novel technique of data analysis. These stations have never before participated in geodetic experiments. We observed 105 radio sources, and amongst them 5 objects which have not previously been observed with VLBI. We have determined positions of these new sources with the accuracy of 2–5 mas. We make the conclusion that the LBA network is capable of conducting absolute astrometry VLBI surveys with an accuracy better than 5 mas.

Keywords

instrumentation: interferometerstechniques: interferometricreference systems
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 26 , Issue 1 , 2009 , pp. 75 - 84
Copyright
Copyright © Astronomical Society of Australia 2009

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