IVS-T2042 Vers.3 (International VLBI Service - Terrestical Reference Frame Observations) 2005 Dec. 20/21 doy 333/334 Geodetic Institute of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2005 (master05.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 SKED (JMG/NRV 2005Feb22) using the EUR-SX band and the EURSX-C-2 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 ) 70% 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 ) Procedures ========== NO PREPASS TIME: There is no time allowed in the schedule for prepassing tapes. Therefore all tapes needed for this experiment must be pre-checked before the start of this experiment. CONDITIONING: Conditioning has to be done before recording with all used Mark 5 module(s)/disk package(s). ATTENTION ========== There are no observations for Wettzell from 18:20 U.T. to 19:40 U.T. Wettzell will participate in the intensive session during this period. --------------------------------------------------------------- Parameter values for experiment T2042 Experiment description: IVS-T2.042 Scheduler: BONN/Mueskens Correlator: see master05.txt file Nominal start: 2005-354-17:30:00 Nominal end: 2005-355-17:30:01 Current yyyyddd: 2005354 (2005.97) ( 13725 MJD, TUES 20DEC.) Greenwich sidereal time: 23:27:35.00 (17:30: 0 UT) Sun's RA and DEC: 17h 55.4m -23d 26.0 =========================================================== First observations Observation listing from file t2042.skd for experiment T2042 Source Start DURATIONS name yyddd-hhmmss Ap Sm Ft Gc Ho Kb Nt Ny Gg Sv Tc Ts Ur Wz 0133+476 05354-173000| 143 720 576 241 508 212 201 720 362| 2145+067 05354-173603| 59 229 229 | 0607-157 05354-173629| 40 40 40 | 3C274 05354-174015| 40 40 | 1741-038 05354-174048| 84 84 | 1611+343 05354-174051| 40 40| 1044+719 05354-174306| 720 691 720 720 720 607 720| =========================================================== Last observations 2145+067 05355-162922| 720 720 455 720 | 0602+673 05355-163311| 303 508 545 611 253 315 630 630| 1057-797 05355-163437| 308 308 | 0133+476 05355-164030| 40 40 40 | 1424-418 05355-164321| 720 720 | 0749+540 05355-164604| 517 157 340 586 236 132 586 503| 1622-253 05355-165127| 559 559 | 0552+398 05355-165813| 40 40 40 40 40 40 40| 0528+134 05355-170039| 40 62 40 40 62 60| 1519-273 05355-170309| 149 149 | 0235+164 05355-170319| 41 97 125 60 40 125 121| 0556+238 05355-170723| 720 720 484 684 324 401 720 720| 1611+343 05355-170738| 720 720 | 0749+540 05355-171732| 56 65 65 55 | 2243-123 05355-172219| 40 40 40| End of listing. =========================================================== Average number of obs. per baseline per source (normalized by up-time) = 2.1 Min = .0 Max = 75.8 (Baseline Ho-Sv on 0727-115) RMS = 4.6 Total time: 1433 minutes ( 23.9 hours). Key: Ap=ALGOPARK Sm=CRIMEA Ft=FORTLEZA Gc=GILCREEK Ho=HOBART26 Kb=KASHIM34 Nt=NOTO Ny=NYALES20 Gg=ORION_5M Sv=SVETLOE Tc=TIGO Ts=TSUKUB32 Ur=URUMQI Wz=WETTZELL Ap Sm Ft Gc Ho Kb Nt Ny Gg Sv Tc Ts Ur Wz Avg % obs. time: 32 20 52 51 40 43 33 56 21 36 33 37 54 55 40 % cal. time: 2 0 1 1 1 2 1 2 0 2 1 2 1 1 1 % slew time: 52 5 21 10 23 29 15 11 2 36 3 13 18 5 17 % idle time: 13 73 24 36 34 23 50 30 75 24 62 46 25 36 39 total # scans: 196 30 129 170 108 223 95 183 51 236 88 245 157 160 147 # scans/hour : 8.2 1.3 5.4 7.1 4.5 9.3 4.0 7.7 2.1 9.9 3.7 10.3 6.6 6.7 6.2 Avg scan (sec): 141 590 351 260 322 168 304 263 359 131 323 132 300 298 281 Total GBytes: 218 139 357 349 274 296 227 379 144 244 224 254 371 376 276 Total GB(M5): 221 141 363 354 278 301 231 385 146 248 227 258 377 382 280 # of tapes : .5 1.1 3.1 .8 .7 2.6 .5 .8 .3 .5 .5 .6 .8 .8 tape change times (hhmm): 0000 1629 0136 0000 0000 0116 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0916 0000 0000 1043 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 1651 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 Total number of tapes: 13.7 Total GBytes (M5) recorded: 3919.1 # OF OBSERVATIONS BY BASELINE | Ap Sm Ft Gc Ho Kb Nt Ny Gg Sv Tc Ts Ur Wz StnTotal ---------------------------------------------------------------------- Ap|196 6 53 93 0 80 41 94 28 103 10 85 63 70 726 Sm| 30 15 15 0 16 21 15 8 20 0 16 11 21 164 Ft| 129 15 5 7 28 17 18 20 48 7 5 23 261 Gc| 170 8 110 62 142 5 132 0 112 101 102 897 Ho| 108 44 2 6 2 10 38 54 15 2 186 Kb| 223 48 117 1 149 0 205 110 92 979 Nt| 95 69 7 74 2 47 57 78 536 Ny| 183 3 164 0 118 113 130 988 Gg| 51 4 1 1 0 4 82 Sv| 236 0 163 120 139 1098 Tc| 88 0 0 0 99 Ts| 245 111 94 1013 Ur| 157 101 807 Wz| 160 856 Total # of scans, observations: 543 4346 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: ALGOPARK GILCREEK HOBART26 NOTO NYALES20 GGAO7108 SVETLOE TIGOCONC TSUKUB32 URUMQI WETTZELL Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 80.00 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 8.000 6.000 14.000 Recording mode setup for: CRIMEA FORTLEZA KASHIM34 Mode Tot.Rate Tot.BandW #chan #bits Barrel C 56.000 Mbits 28.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 2.00 MHz 2 14(*0) 28 135.00 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 8.000 6.000 14.000 =========================================================== Monitoring Sources Source Min Max Actual Num #Scans 0405-385 3.00 100.00 .30 13 11 1034-293 3.00 100.00 .55 24 10 1519-273 3.00 100.00 1.56 68 23 1622-253 5.00 100.00 .58 25 13 Total 2.99 130 57 =========================================================== Minor Options Option Norm Wt Aux_Parm Astro Abs 5.00 BegScan Rel 1.00 EndScan Rel 1.00 NumObs Rel 5.00 StatIdle Abs 1.00 StatWt Abs 3.00 FFFFF FFFFT FTFF =========================================================== Major Options SkyCov Yes Min_Between 20 Best% 75.0 Last_Hrs 24.00 Add_ps 30.00 Obs_Wts SNRwt =========================================================== Tape types ID Station Tape length Density Passes Ap ALGOPARK 17400feet (Thin ) 56250 (HIGH ) 12 Sm CRIMEA 8700feet (Thick ) 33333 (Low ) 12 Ft FORTLEZA 8700feet (Thick ) 33333 (Low ) 12 Gc GILCREEK 17400feet (Thin ) 56250 (HIGH ) 12 Ho HOBART26 17400feet (Thin ) 56250 (HIGH ) 12 Kb KASHIM34 8700feet (Thick ) 33333 (Low ) 12 Nt NOTO 17400feet (Thin ) 56250 (HIGH ) 12 Ny NYALES20 17400feet (Thin ) 56250 (HIGH ) 12 Gg GGAO7108 17400feet (Thin ) 56250 (HIGH ) 12 Sv SVETLOE 17400feet (Thin ) 56250 (HIGH ) 12 Tc TIGOCONC 17400feet (Thin ) 56250 (HIGH ) 12 Ts TSUKUB32 17400feet (Thin ) 56250 (HIGH ) 12 Ur URUMQI 17400feet (Thin ) 56250 (HIGH ) 12 Wz WETTZELL 17400feet (Thin ) 56250 (HIGH ) 12 ===========================================================