IVS-T2063 (International VLBI Service - Terrestical Reference Frame Observations) 2009 Aug 25-26 doy 237-238 Institute for Geodesy and Geoinformation (IGG) of the University of Bonn, Germany Correlator ========== see MASTER SCHEDULE 2009 (master09.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 ======= 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 one period. Noto will not be able to participate in this session because the telescope is still in fault with the El axis. Session Notes for session: t2063 Experiment: T2063 Description IVS-T2.063 Scheduler: IGGB/Muesk Correlator: BONN Start: 2009-237-17:30:00 End: 2009-238-17:30:01 Current yyyyddd: 2009237 (2009.65) ( 15069 MJD, TUES 25AUG.) Greenwich sidereal time: 15:46: 0.00 (17:30: 0 UT) Sun's RA and DEC: 10h 18.4m 10d 32.0 =========================================================== 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. =========================================================== First observations Observation listing from file t2063.skd for experiment T2063 Source Start DURATIONS name yyddd-hhmmss Ai Bd Cc 15 Ft Mh Nt Sh Tc Ts Ur Wz Zc 0133+476 09237-173000| 361 40 530 40 530 62 40 101 275 93| Last observations 0607-157 09238-170602| 56 56 | 1622-253 09238-170907| 421 421 389| 0552+398 09238-171214| 147 40 177 40 177 40 40 | 0434-188 09238-171448| 76 76 | 1923+210 09238-171727| 74 287 111 52 287 | 3C274 09238-172258| 58 58 | =========================================================== Average number of obs. per baseline per source(normalized by up-time) = 3.2 Min = 0.0 Max = 68.6 (Baseline Tc-Ts on 0528+134) RMS = 7.3 Total time: 1434 minutes ( 23.9 hours). Key: Ai=AIRA Bd=BADARY Cc=CHICHI10 15=DSS15 Ft=FORTLEZA Mh=METSAHOV Nt=NOTO Sh=SESHAN25 Tc=TIGO Ts=TSUKUB32 Ur=URUMQI Wz=WETTZELL Zc=ZELENCHK Ai Bd Cc 15 Ft Mh Nt Sh Tc Ts Ur Wz Zc Avg % obs. time: 59 18 62 27 39 46 0 26 33 14 32 30 17 31 % cal. time: 2 3 2 3 2 2 0 4 1 3 3 2 2 2 % slew time: 5 45 5 40 27 23 0 38 4 12 31 8 34 21 % idle time: 32 32 30 29 31 28 100 31 61 70 33 59 46 45 total # scans: 159 283 147 273 159 155 0 323 128 248 267 210 209 197 # scans/hour : 7 12 6 11 7 6 0 14 5 10 11 9 9 8 Avg scan (sec): 322 56 363 85 209 254 0 70 219 48 102 123 68 147 # data tracks: 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 Total GBytes: 921 286 961 420 598 708 0 409 504 216 492 465 257 480 Total GB(M5): 818 254 854 373 531 630 0 364 448 192 437 413 228 426 Total GBytes (M5) recorded: 5543.3 # OF OBSERVATIONS BY BASELINE | Ai Bd Cc 15 Ft Mh Nt Sh Tc Ts Ur Wz Zc StnTotal --------------------------------------------------------------------------- Ai| 131 145 47 2 78 0 153 0 146 122 65 64 953 Bd| 128 67 17 110 0 258 0 173 241 151 141 1417 Cc| 45 1 76 0 142 0 138 121 63 62 921 15| 101 37 0 68 101 74 55 52 36 683 Ft| 23 0 8 38 7 19 45 42 303 Mh| 0 106 5 86 105 110 115 851 Sh| 0 218 243 141 137 1474 Tc| 13 0 12 8 177 Ts| 157 93 81 1186 Ur| 149 144 1356 Wz| 151 1032 Zc| 981 Total # of scans, observations: 620 5667 =========================================================== Recording mode Name Code EUR2-SX SX Recording mode setup for: AIRA CHICHI10 SESHAN25 TSUKUB32 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 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 10.000 6.000 16.000 Recording mode setup for: BADARY DSS15 NOTO TIGOCONC URUMQI WETTZELL ZELENCHK Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 128.000 Mbits 64.000 MHz 14 1 16 Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 4.00 MHz 1 16(*2) 32 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 10.000 6.000 16.000 Recording mode setup for: FORTLEZA 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) 32 135.00 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 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 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 10.000 6.000 16.000 ===========================================================