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Contributions to Proceedings:

C. Plötz, T. Schüler, H. Hase, L. La Porta, M. Schartner, J. Böhm, S. Bernhart, C. Brunini, F. Salguero, J. Vera, A. Müskens, G. Kronschnabl, W. Schwarz, A. Phogat, A. Neidhardt, M. Brandl:
"INT9 - ∆UT1 Determination Between the Geodetic Observatories AGGO and Wettzell";
in: "Proceedings of the 24th European VLBI Group for Geodesy and Astrometry Working Meeting", R. Haas, S Garcia-Espada, J.A. Lopez Fernandez (ed.); Chalmers University of Technology, 2019, ISBN: 978-84-416-5634-5, 124 - 128.



English abstract:
The AGGO radio telescope, located at La Plata in Argentina, comprises together with the
radio telescopes in Wettzell, Germany a baseline configuration spanning a longitude difference of 71. Therefore, starting in the middle of 2018, tests were initiated to prove the usability for ΔUT1 determination between the traditional S/X VLBI systems at AGGO and Wettzell. The 6 m AGGO radio telescope was scheduled in combination with the 20 m radio telescope Wettzell (RTW) and the 13.2 m Wettzell North (WETTZ13N) in weekly VLBI tests for ΔUT1 determination, named INT9. The scheduling of INT9 sessions was done with sked and the time duration was set to be two hours each. The sessions were conducted mostly on Thursdays, just before the normal INT-1 Intensive session takes place. The recording mode needed to be evaluated step by step to increase gradually from a standard 256 Mbit/s recording mode to 1 Gbit/s. The latter mode yields a higher amount of scans in a given time period. The goal is to exploit the highest ΔUT1 determination accuracy between AGGO and Wettzell as possible. We will report our initial experiences with the VLBI operation at both observatories and compare first results between official ΔUT1 measurements and the INT9 derived values as well as a potential future outlook of this INT9 VLBI application.

Keywords:
Intensive, dUT1, Geodetic Observatory Wettzel, AGGO


Electronic version of the publication:
https://publik.tuwien.ac.at/files/publik_284929.pdf


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