Session Notes for VO (VLBI Global Observing System-Operations) session: vo4129 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== ----- Parameter listing -------------------------------------- Experiment: VO4129 Description VGOS broadband session Scheduler: NASA Correlator: SHAO Start: 2024-129-12:00:00 End: 2024-130-12:00:00 Current yyyyddd: 2024129 (2024.35) ( 20439 MJD, WED. 8MAY.) Greenwich sidereal time: 03:07:13 (12:00:00 UT) Sun's RA and DEC: 3h 3.7m 17d 17.9 =========================================================== Important Station Information Hobart-12m was tagged along to this schedule file. =========================================================== There are no observations for Kokee from 17:15 U.T. to 18:45 U.T. Kokee will participate in an intensive session during this period. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Hb K2 Mg Sa Wf 1846+322 24129-120000| 30 30 30 30| Hobart's first scan is at 129135717. =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Hb K2 Mg Sa Wf 1749+096 24130-115611| 30 30 30| 2255-282 24130-115724| 30 30 30| 2318+049 24130-115832| 30 30 30| Hobart's last scan is at 130100704. =========================================================== SKED Summary from file ./vo4129.skd for experiment VO4129 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 18.4 Min = 0.0 Max = 460.0 (Baseline K2-Mg on 2229+695) RMS = 33.7 Total time: 1439 minutes ( 24.0 hours). Key: Hb=HOBART12 K2=KOKEE12M Mg=MACGO12M Sa=RAEGSMAR Wf=WESTFORD Hb K2 Mg Sa Wf Avg % obs. time: 1 24 43 35 40 28 % cal. time: 0 3 5 4 5 4 % slew time: 0 11 24 10 40 17 % idle time: 98 62 27 50 14 51 total # scans: 18 622 1165 930 1079 762 # scans/hour : 1 26 49 39 45 32 Avg scan (sec): 30 33 32 32 32 31 # data tracks: 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 Total TB(M5): 0.6 21.1 37.9 30.7 35.3 25.1 # OF OBSERVATIONS BY BASELINE | Hb K2 Mg Sa Wf Total ----------------------------------- Hb| 18 18 0 18 54 K2| 616 381 530 1545 Mg| 924 1073 2631 Sa| 838 2143 Wf| 2459 Number of 2-station scans: 0 Number of 3-station scans: 870 Number of 4-station scans: 301 Number of 5-station scans: 0 Total number of scans: 1171 Total number of obs: 4416 Total integrated obs-time: 144630 Average obs-time: 32.8 Histogram of observation durations Dur: 30 120 #Obs: | 135| Average X-band SNRs by baseline | Hb K2 Mg Sa Wf AVG ---------------------------------- Hb| 37 35 - 30 34 K2| 50 45 43 46 Mg| 62 59 58 Sa| 79 66 Wf| 62 Average S-band SNRs by baseline | Hb K2 Mg Sa Wf AVG ---------------------------------- Hb| 27 25 - 20 24 K2| 38 37 30 35 Mg| 45 36 40 Sa| 49 45 Wf| 39 =========================================================== Recording mode Name Code GEOSX SX Recording mode for: HOBART12 KOKEE12M RAEGSMAR WESTFORD Mode Tot.Rate #Chan Chan.BW Tot.BW #BBC #bits Tracks*(fan) Tot.tracks Mk341:1 256 Mbps 16 8 Mhz 128 Mhz 14 1 16*(1) 16 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 140.0 MHz rms spanned bw= 50.9 MHz Effective number of 1-bit channels recorded per sub-pass X S Total 10.00 6.00 16.00 Recording mode for: MACGO12M Mode Tot.Rate #Chan Chan.BW Tot.BW #BBC #bits Tracks*(fan) Tot.tracks Mk341:2 256 Mbps 16 8 Mhz 128 Mhz 14 1 16*(2) 32 X-band spanned bw= 720.0 MHz rms spanned bw= 280.4 MHz S-band spanned bw= 140.0 MHz rms spanned bw= 50.9 MHz Effective number of 1-bit channels recorded per sub-pass X S Total 10.00 6.00 16.00 =========================================================== Calibrator Source Information A calibrator source was scheduled every hour during this session with a duration of 120 seconds. =========================================================== Minor Options BegScan Rel 1.00 EndScan Rel 1.00 StatWt Abs 1.00 =========================================================== Major Options Subnet HbK2MgSaWf SkyCov Yes AllBlGood Yes MaxAngle 180.00 MinAngle 30.00 MinBetween 15 MinSunDist 15.00 MaxSlewTime 300 TimeWindow 24.00 MinSubNetSize 3 NumSubNet 2 Best 60 FillIn Yes FillMinSub 3 FillMinTime 120 FillBest 80 Add_ps 5.0 El_noise 0.0 SNRWts Yes SplitTwins No =========================================================== SNR Targets Minimum SNR by baseline for multi-baseline scans X-band (margin 0) S-band (margin 0) X-band (ast_margin 0) S-band (ast_margin 0) Hb K2 Mg Sa Hb K2 Mg Sa K2 15 K2 15 Mg 15 15 Mg 15 15 Sa 15 15 15 Sa 15 15 15 Wf 15 15 15 15 Wf 15 15 15 15