IVS-T2067 (International VLBI Service - Terrestical Reference Frame Observations) 2010 Feb.02-03 doy 033-034 Institute for Geodesy and Geoinformation (IGG) of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2010 (master10.txt) Purpose ======= General the purpose of the IVS-T2 sessions is to monitor the TRF via monthly sessions. Since April 2004 the purpose of the remaining IVS-T2 sessions has been changed by the IVS OPC (Observing Program Committee). The new plan uses larger networks for each T2 session, say 16 to 20 stations, but have fewer T2 sessions during the year. The larger network should provide a stronger solution and better TRF results, even if there are fewer sessions each year. The TRF determine from single session solutions or from a global solution is very important IVS product because this is an essential part for creating the ITRF by corresponding IERS Product Center. A particular strength of VLBI is its contribution to the scale of the ITRF. Usually the TRF is computed from the 24h sessions that are dedicated to observing the EOP. Network ======= The standard configuration of the monthly observed IVS-T2 experiments consists of sixteen and more stations. All stations differ in some extent between all available IVS geodetic network stations from experiment to experiment. Schedule ======== This schedule was generated by the last updated SKED version using the EUR-SX band and the 64-16(EU-T2) EURSX-C-4 frequency setup, depending on which station are available for this observation. Variable scan lengths with a minimum 40 sec. and the most recent source flux models are included. SNR goals are 20 at X-band and S-band depent on different baselines and stations. The predicted SNRs used include a 30 ps noise contribution added in quadrature, which is a typical magnitude for the reweight constants applied in SOLVE solutions. Some important optimization features enabled for this experiment : - the covariance analysis during schedule generation considers the previous 1 hours of observations, - minor SKED optimization parameters . maximum number of observations, . minimum time, were optimized over the best ( in a covariance sense ) 75% of the possible observations, this produces a somewhat more even sky distribution, - observations were weighted by their expected SNRs, - 30 ps noise contribution added, - mimimum time between observations of the same radio source was set to 20 min - using 63 source for improving the sky covorage (and some new astrometric sources / see $ASTROMETRIC ) COMMENT ======= Two new Vera stations will participate this time. From the following VLBI network stations we planed to transfer the recorded data via eVLBI Ai,Cc,Ts,Vm,Vs,Kb Session Notes for session: t2067 ================================== Experiment: T2067 Description IVS-T2.067 Scheduler: IGGB/Muesk Correlator: BONN Start: 2010-033-17:30:00 End: 2010-034-17:30:01 Current yyyyddd: 2010033 (2010.09) ( 15230 MJD, TUES 2FEB.) Greenwich sidereal time: 2:21: 0.00 (17:30: 0 UT) Sun's RA and DEC: 21h 4.9m -16d 41.6 =========================================================== There are no observations for Kokee and Wettzell from 18:20 U.T. to 19:40 U.T. Kokee and Wettzell will participate in the intensive session during this 1.5 hour period. =========================================================== First observations name yyddd-hhmmss Ai Cc Sm 13 Kk Ma Mh Nt Oh Tc Ts Ur Vs Vm Wz 1741-038 10033-173000| 546 546 | 4C39.25 10033-173000| 152 368 357 720 720 194 275 40 40 175 175 94| 0727-115 10033-173813| 105 107 63 94 40 40 40 187 187 57| 1958-179 10033-173942| 142 142 | Last observations 1741-038 10034-170829| 543 543 | 1611+343 10034-172026| 490 69 351 40 490 490 | 0642+449 10034-172254| 351 220 220 351 101 40 164 126| 1954-388 10034-172425| 252 252 | 1044+719 10034-172733| 132 40 132 | NRAO150 10034-172738| 82 67 82| End of listing. =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 2.4 Min = 0.0 Max = 65.5 (Baseline Kk-Ur on 1921-293) RMS = 6.1 Total time: 1439 minutes ( 24.0 hours). Key: Ai=AIRA Cc=CHICHI10 Sm=CRIMEA 13=DSS13 Kk=KOKEE Ma=MATERA Mh=METSAHOV Nt=NOTO Oh=OHIGGINS Tc=TIGO Ts=TSUKUB32 Ur=URUMQI Vs=VERAISGK Vm=VERAMZSW Wz=WETTZELL Ai Cc Sm 13 Kk Ma Mh Nt Oh Tc Ts Ur Vs Vm Wz Avg % obs. time: 61 63 42 32 42 46 50 29 50 54 25 38 68 59 30 46 % cal. time: 2 2 2 3 3 3 2 3 2 2 4 3 2 2 3 2 % slew time: 6 6 31 33 15 19 28 35 9 5 17 27 7 8 9 17 % idle time: 29 28 24 30 40 32 19 32 39 39 53 32 23 30 57 34 total # scans: 203 180 201 275 227 221 178 253 143 148 359 247 143 168 245 212 # scans/hour : 8 8 8 11 9 9 7 11 6 6 15 10 6 7 10 9 Avg scan (sec): 261 303 181 102 161 179 244 99 301 314 60 132 408 305 106 210 # data tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 Total GBytes: 954 983 655 503 656 714 781 451 774 837 389 587 1051 921 466 715 Total GB(M5): 848 873 582 447 583 635 695 401 688 744 346 522 934 819 414 635 Total GBytes (M5) recorded: 9532.2 # OF OBSERVATIONS BY BASELINE | Ai Cc Sm 13 Kk Ma Mh Nt Oh Tc Ts Ur Vs Vm Wz StnTotal ------------------------------------------------------------------------------------- Ai| 145 39 50 76 32 50 36 0 0 182 100 111 103 36 960 Cc| 40 51 80 32 55 32 0 0 167 85 104 99 34 924 Sm| 17 17 159 131 162 11 6 69 117 47 40 158 1013 13| 140 22 35 36 60 73 109 49 36 54 44 776 Kk| 16 36 20 24 33 142 82 61 79 32 838 Ma| 120 193 17 13 61 99 37 29 179 1009 Mh| 123 8 4 77 113 57 49 127 985 Nt| 19 18 69 113 38 31 211 1101 Oh| 84 7 5 0 0 15 250 Tc| 3 0 0 0 18 252 Ts| 162 131 158 71 1408 Ur| 100 84 108 1217 Vs| 93 37 852 Vm| 34 853 Wz| 1104 Total # of scans, observations: 804 6771 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 CRIMEA DSS13 KOKEE MATERA NOTO OHIGGINS TIGOCONC TSUKUB32 URUMQI VERAISGK VERAMZSW WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 128.000 Mbits 64.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 16(*2) 32 0.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 80.0 MHz rms spanned bw= 30.2 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: METSAHOV Mode Tot.Rate Tot.BandW #chan #bits Barrel VLBA1:2 128.000 Mbits 64.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 16(*2) 32 0.00 X-band spanned bw= 360.0 MHz rms spanned bw= 140.2 MHz S-band spanned bw= 80.0 MHz rms spanned bw= 30.2 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 ===========================================================