First geodetic observations using new VLBI stations ASKAP-29 and WARK12M

Abstract

We report the results of a successful 7 hour 1.4 GHz VLBI experiment using two new stations, ASKAP-29 located in Western Australia and WARK12M located on the North Island of New Zealand. This was the first geodetic VLBI observing session with the participation of these new stations. We have determined the positions of ASKAP-29 and WARK12M. Random errors on position estimates are 150-200 mm for the vertical component and 40-50 mm for the horizontal component. Systematic errors caused by the unmodeled ionosphere path delay may reach 1.3 m for the vertical component.

11 pages, 6 flgures, 4 tables

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• Study of the atmospheric pressure loading signal in VLBI observations
• Evolution of the pc-scale structure of PKS 1934-638 revisited: first science with the ASKAP and New Zealand telescopes
• The use of the Long Baseline Array in Australia for precise geodesy and absolute astrometry