Russian domestic QUASAR network – participation in Domestoc and IVS observational programs
Finkelstein,  A.Ipatov, S. Smolentsev, I.Surkis, E. Skurikhina
Institute of Applied Astronomy RAS, Russia
Oral

Regular determinations of Earth orientation parameters have been done by the QUASAR VLBI network since August 2006. The observations are carried out in the framework of two national programs: (1) 24-hour sessions for the determination of the five EOP parameters using all three network observatories (RU-E program) and (2) 8-hour sessions for the determination of  Universal time using the Zelenchukskaya and Badary observatories (RU-U program). Each of these two session types are observed twice per month. We present the analyses of the  observations. The mean RMS EOP deviations from the IERS 05C04 series in the RU-E program are 0.83 mas for Pole position, 43 µs for UT1-UTC, and 0.69 mas for Celestial Pole position.  The RMS deviations of the Universal time values from IERS C04 series for the RU-U program are 110 µs. First results of observations with using Mark5b registration system are presented.  Station positions were specified  from both – domestic and IVS observations in ITRF2005 and VTRF2008 catalogue systems. Baselines time variations  between QUASAR network and  IVS stations are under investigation.