Session Notes for R1 (Rapid Turnaround Monday) session: r1022 Prepared by C. Thomas, NVI, Inc./GSFC Refer to http://ivscc.gsfc.nasa.gov/program/descrip2002.html#r1 for the session purpose. =========================================================== Parameter values for experiment R1022 Experiment description: IVS-R1 Scheduler: NASA Correlator: HAYSTACK Nominal start: 2002-154-17:00:00 Nominal end: 2002-155-17:00:00 Current yyyyddd: 2002154 (2002.42) ( 12429 MJD, MON. 3JUN.) Greenwich sidereal time: 9:47:54.70 (17: 0: 0 UT) Sun's RA and DEC: 4h 46.1m 22d 21.1 =========================================================== The following sources were included for research purposes: 1023+131 (70 observations), 1538+149 (46 observations), 1754+159 (50 observations), 1952+138 (50 observations). =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gc Hh Ma Tc Ts Wf 0607-157 02154-170000| 30 30 30| 1300+580 02154-170000| 45 45 30 | =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gc Hh Ma Tc Ts Wf 0454-234 02155-164454| 104 104| NRAO512 02155-164619| 131 131 67 | 3C274 02155-165003| 108 108 | 2128-123 02155-165016| 53 53 | =========================================================== SKED Summary from file ./r1022.skd for experiment R1022 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 4.0 Min = .0 Max = 30.9 (Baseline Gc-Ts on 2128-123) RMS = 5.2 Total time: 1431 minutes ( 23.9 hours). Key: Gc=GILCREEK Hh=HARTRAO Ma=MATERA Tc=TIGO Ts=TSUKUB32 Wf=WESTFORD Gc Hh Ma Tc Ts Wf Avg % obs. time: 32 15 33 13 25 38 26 % cal. time: 6 2 4 1 5 5 4 % slew time: 32 37 34 3 22 19 25 % idle time: 28 44 27 81 46 36 44 # of tapes : 1.9 .9 1.9 .8 1.5 2.1 total # scans: 546 191 421 96 494 447 365 # scans/hour : 22 8 17 4 20 18 15.2 Avg scan (sec): 51 67 67 122 43 73 70 tape change times (hhmm): 0609 0000 0535 0000 0938 0337 0000 0000 0000 0000 0000 1541 # OF OBSERVATIONS BY BASELINE | Gc Hh Ma Tc Ts Wf StnTotal -------------------------------------- Gc|546 17 215 41 396 346 1015 Hh| 191 168 25 68 61 339 Ma| 421 35 216 246 880 Tc| 96 15 79 195 Ts| 494 201 896 Wf| 447 933 Number of 2-station scans: 377 Number of 3-station scans: 278 Number of 4-station scans: 148 Number of 5-station scans: 3 Number of 6-station scans: 0 Total # of scans, observations: 806 2129 =========================================================== Recording mode Name Code GEOSX4F 4F Recording mode setup for: GILCREEK Mode Tot.Rate Tot.BandW #chan #bits Barrel VLBA1:2 256.000 Mbits 128.000 MHz 14 1 8:1 Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 16(*2) 32 160.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 120.0 MHz rms spanned bw= 48.8 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 Recording mode setup for: HARTRAO MATERA TIGOCONC TSUKUB32 WESTFORD Mode Tot.Rate Tot.BandW #chan #bits Barrel Mk341:2 256.000 Mbits 128.000 MHz 14 1 NONE Chan.BW #Subpasses Tracks(*fan) Tot.tracks Speed 8.00 MHz 1 16(*2) 32 160.00 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 120.0 MHz rms spanned bw= 48.8 MHz Effective number of channels recorded per sub-pass X S Total 10.000 6.000 16.000 =========================================================== Tape types ID Station Tape length Density Gc GILCREEK 17400feet (Thin ) 56700. (High) Hh HARTRAO 17400feet (Thin ) 56250. (High) Ma MATERA 17400feet (Thin ) 56250. (High) Tc TIGOCONC 17400feet (Thin ) 56250. (High) Ts TSUKUB32 17400feet (Thin ) 56250. (High) Wf WESTFORD 17400feet (Thin ) 56250. (High) =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 5) Gc Hh Ma Tc Ts Gc Hh Ma Tc Ts Hh 20 Hh 15 Ma 20 20 Ma 15 15 Tc 20 20 20 Tc 15 15 15 Ts 20 20 20 20 Ts 15 15 15 15 Wf 20 20 20 20 20 Wf 15 15 15 15 15