IVS-T2121 (International VLBI Service - Terrestical Reference Frame Observations) 2017 Oct.17-18 doy 290-291 Institute for Geodesy and Geoinformation (IGGB) of the University of Bonn, Germany Nominal Start Time: 2017:290:17h30 UT Nominal End Time: 2017:291:17h30 UT Duration: 24.0 hr Correlator: BONN Participating stations (17) ====================== Sm=CRIMEA Is=ISHIOKA Kg=KOGANEI Nt=NOTO Ny=NYALES20 On=ONSALA60 Kv=SEJONG Wz=WETTZELL K1=KASHIM11 Sv=SVETLOE Vm=VERAMZSW Zc=ZELENCHK 13=DSS13 Mc=MEDICINA Ht=HART15M Eb=EFLSBERG Ys=YEBES40M 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 24 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 15 sec. and the most recent source flux models are included. SNR goals are around 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 15 min COMMENTS ======== 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 1.5 hour period. Session Notes for session: t2121 =========================================================== Experiment: T2121 Description IVS-T2.121 Scheduler: IGGB/Muesk Correlator: BONN Start: 2017-290-17:30:00 End: 2017-291-17:30:01 Current yyyyddd: 2017290 (2017.79) ( 18044 MJD, TUES 17OCT.) =========================================================== First observations Observation listing from file t2121.skd for experiment T2121 Source Start DURATIONS name yyddd-hhmmss Sm Is Kg Nt Ny On Kv Wz K1 Sv Vm Zc 13 Mc Ht Eb Ys 0003-066 17290-173000| 61 82 138 82 138 | 1751+288 17290-173000| 242 110 221 242 72 59 74 61 157 209 20 182| 1639+230 17290-173244| 137 131 137 107 82 20 | Last observations 1606+106 17291-171419| 556 556 45 495| 1803+784 17291-172048| 103 140 57 95 140 51 34 37 91 20 | OJ287 17291-172355| 86 117 194 117 194 | 1726+455 17291-172712| 130 65 94 130 39 28 27 52 73 20 24| 0537-441 17291-172806| 40 97 92 97 86 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 0.8 Min = 0.0 Max = 57.6 (Baseline 13-Eb on 3C446 ) RMS = 3.2 Total time: 1439 minutes ( 24.0 hours). Key: Sm=CRIMEA Is=ISHIOKA Kg=KOGANEI Nt=NOTO Ny=NYALES20 On=ONSALA60 Kv=SEJONG Wz=WETTZELL K1=KASHIM11 Sv=SVETLOE Vm=VERAMZSW Zc=ZELENCHK 13=DSS13 Mc=MEDICINA Ht=HART15M Eb=EFLSBERG Ys=YEBES40M Sm Is Kg Nt Ny On Kv Wz K1 Sv Vm Zc 13 Mc Ht Eb Ys Avg % obs. time: 48 44 59 47 50 52 63 44 54 37 57 32 21 50 33 8 46 44 % cal. time: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 3 2 2 % slew time: 28 4 7 25 11 13 9 6 7 33 8 32 24 26 7 63 13 19 % idle time: 21 48 30 24 35 32 25 47 36 27 31 33 52 21 58 26 38 35 total # scans: 171 214 193 176 185 190 172 175 180 210 148 201 173 175 126 217 179 181 # scans/hour : 7 9 8 7 8 8 7 7 8 9 6 8 7 7 5 9 7 8 Avg scan (sec): 244 177 266 232 234 235 319 217 261 151 335 139 102 245 224 32 222 213 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 16 32 16 16 16 16 Total TB(M5): 0.7 0.6 0.8 0.7 0.7 0.7 0.9 0.6 0.8 0.5 0.8 0.4 0.6 0.7 0.5 0.1 0.6 0.6 # OF OBSERVATIONS BY BASELINE | Sm Is Kg Nt Ny On Kv Wz K1 Sv Vm Zc 13 Mc Ht Eb Ys Total ----------------------------------------------------------------------------------------------- Sm| 38 28 70 60 105 42 62 23 65 32 106 26 81 55 86 82 961 Is| 180 22 70 52 145 31 165 43 117 31 57 28 18 21 25 1043 Kg| 13 58 43 149 17 169 28 122 19 46 23 15 12 18 940 Nt| 50 59 15 134 11 116 12 119 51 96 77 136 84 1065 Ny| 110 46 65 52 100 41 67 90 75 32 78 82 1076 On| 48 70 37 77 40 72 58 107 50 83 110 1121 Kv| 19 141 27 113 24 37 20 17 13 18 874 Wz| 14 132 15 111 59 83 58 123 77 1070 K1| 23 120 17 50 16 11 7 13 869 Sv| 25 144 98 76 45 146 74 1219 Vm| 16 36 21 16 14 17 757 Zc| 58 88 67 133 80 1152 13| 56 14 75 57 868 Mc| 60 105 140 1075 Ht| 74 63 672 Eb| 108 1214 Ys| 1048 Number of 4-station scans: 194 Number of 5-station scans: 118 Number of 6-station scans: 78 Number of 7-station scans: 61 Number of 8-station scans: 26 Number of 9-station scans: 22 Number of 10-station scans: 16 Number of 11-station scans: 8 Number of 12-station scans: 7 Number of 13-station scans: 1 Number of 14-station scans: 2 Number of 15-station scans: 3 Total number of scans: 536 Total number of obs: 8512 Total integrated obs-time: 1318354 Average obs-time: 154.9 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode for: CRIMEA EFLSBERG HART15M ISHIOKA KASHIM11 KOGANEI NOTO NYALES20 SEJONG SVETLOE VERAMZSW YEBES40M ZELENCHK Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:1 128 Mbits 64 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 4.00 MHz 1 16(*1) 16 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 1-bit channels recorded per sub-pass X S Total 10.00 6.00 16.00 Recording mode for: DSS13 Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:1 256 Mbits 64 MHz 14 2 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 4.00 MHz 1 32(*1) 32 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 1-bit channels recorded per sub-pass X S Total 19.13 11.48 30.61 Recording mode for: MEDICINA ONSALA60 WETTZELL Mode Tot.Rate Tot.BandW #BBC #bits Barrel Mk341:2 128 Mbits 64 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks 4.00 MHz 1 16(*2) 32 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 1-bit channels recorded per sub-pass X S Total 10.00 6.00 16.00 ===========================================================