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For several years the radio telescope of the Geodetic Observatory Wettzell has participated in the daily one-hour INTENSIVE-sessions (INT), in addition to the 24-hour sessions, in order to determine UT1-UTC. The INT1 sessions are observed together with Kokee Park Geophysical Observatory (Hawaii, USA) and partly with Svetloe (Russia) every weekday and are correlated at Washington Correlator. On Saturday and Sunday, Wettzell is engaged together with Tsukuba (Japan) in the INT2 sessions which are correlated in Japan. On Monday morning INT3 session, which is correlated in Bonn, completes the INTENSIVE observations in the network of Wettzell, Tsukuba and Ny Alesund. For all these INTENSIVE experiments, e-transfer is used to ship the data over standard internet connections to the correlators in near real-time. Wettzell itself routinely uses a fast internet connection at 622 Mbit/sec for these e-transfers. All these efforts reduce the delay times from taking the observations, to correlation, to publishing the final geodetic data product at the primary IVS Data Centers. |
