Session Notes for R1 (Rapid Turnaround Monday) session: r1021 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 R1021 Experiment description: IVS-R1 Scheduler: NASA Correlator: BONN Nominal start: 2002-148-17:00:00 Nominal end: 2002-149-17:00:00 Current yyyyddd: 2002148 (2002.41) ( 12423 MJD, TUES 28MAY.) Greenwich sidereal time: 9:24:15.36 (17: 0: 0 UT) Sun's RA and DEC: 4h 21.5m 21d 30.6 =========================================================== The following sources were included for research purposes: 1004+141 (56 observations), 1522+155 (68 observations), 1922+1551 (56 observations), CTA102 (110 observations). =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gc Ma Ny Tc Wf Wz 0552+398 02148-170000| 93 129 94 129 30 61| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gc Ma Ny Tc Wf Wz CTA102 02149-163828| 36 51 69 69 | 0602+673 02149-164056| 32 32 30 31 30| 2234+282 02149-164254| 30 30 30 | 2113+293 02149-164407| 52 72 72 | 1923+210 02149-164602| 42 42 | =========================================================== SKED Summary from file ./r1021.skd for experiment R1021 (all scans with at least one subnet station) Average number of obs. per baseline per source (normalized by up-time) = 6.1 Min = .0 Max = 36.0 (Baseline Ny-Tc on 3C446 ) RMS = 6.5 Total time: 1426 minutes ( 23.8 hours). Key: Gc=GILCREEK Ma=MATERA Ny=NYALES20 Tc=TIGO Wf=WESTFORD Wz=WETTZELL Gc Ma Ny Tc Wf Wz Avg % obs. time: 30 32 34 11 37 31 29 % cal. time: 5 5 6 1 5 5 4 % slew time: 29 35 27 2 21 15 21 % idle time: 34 26 31 85 36 47 43 # of tapes : 1.8 1.9 2.3 .6 2.1 1.8 total # scans: 469 460 536 87 459 512 420 # scans/hour : 19 19 22 3 19 21 17.5 Avg scan (sec): 55 60 55 108 69 52 66 tape change times (hhmm): 0646 0516 0331 0000 0415 0618 0000 0000 1338 0000 1605 0000 # OF OBSERVATIONS BY BASELINE | Gc Ma Ny Tc Wf Wz StnTotal -------------------------------------- Gc|469 248 407 42 359 293 1349 Ma| 460 367 37 280 458 1390 Ny| 536 31 345 419 1569 Tc| 87 80 39 229 Wf| 459 318 1382 Wz| 512 1527 Number of 2-station scans: 190 Number of 3-station scans: 168 Number of 4-station scans: 144 Number of 5-station scans: 197 Number of 6-station scans: 13 Total # of scans, observations: 712 3723 =========================================================== 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: MATERA NYALES20 TIGOCONC WESTFORD WETTZELL 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) Ma MATERA 17400feet (Thin ) 56250. (High) Ny NYALES20 17400feet (Thin ) 56250. (High) Tc TIGOCONC 17400feet (Thin ) 56250. (High) Wf WESTFORD 17400feet (Thin ) 56250. (High) Wz WETTZELL 17400feet (Thin ) 56250. (High) =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 5) S-band (margin 5) Gc Ma Ny Tc Wf Gc Ma Ny Tc Wf Ma 20 Ma 15 Ny 20 20 Ny 15 15 Tc 20 20 20 Tc 15 15 15 Wf 20 20 20 20 Wf 15 15 15 15 Wz 20 20 20 20 20 Wz 15 15 15 15 15