Session Notes for VO (VLBI Global Observing System-Operations) session: vo2348 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== ----- Parameter listing -------------------------------------- Experiment: VO2348 Description VGOS broadband session Scheduler: NASA Correlator: HAYS Start: 2022-348-18:00:00 End: 2022-349-18:00:00 ---------- Scan data parameters------------------------------- VScan Y (Compute scan length) Duration 30 sec (default duration for VSCAN=N) Modscan 1 sec (scans are multiples of this) Minscan 30 sec (min scan length) Maxscan 30 sec (max scan length) Setup 2 sec (settle time) Early 0 sec (start recording) Calibration 4 sec (time before obs) Corsync 1 sec (pad scan at end) Idle 0 sec (idle after obs) Minslew 0 sec (min slew time) Fill_off 0 sec (fill cmd buff) Mark6_off 0 sec (buffer offset) ---------- Procedure parameters ------------------------------ PRFLAG YYNN (required procedures) PREOB PREOB (pre-ob procedure) MIDOB MIDOB (mid-ob procedure) POSTOB MIDOB (post-ob procedure) ---------- Timing parameters ------------------------------ SOURCE 1sec (SOURCE time) Tapetm 1sec (TAPE command time) ---------- General parameters ------------------------------- MODULAR 1sec (start time mark) MINIMUM 0sec (time between obs.) LOOKAHEAD 20min (for WHATSUP) SNR MAN (reject for low SNR) WIDTH 79columns (width of screen) CONFIRM Y (ask before adding obs) KEEP_LOG Y (keep log upon exit) CONF_EQUIP N (update info from cat) DEBUG N (display debugging info) VERBOSE LEVEL 0 ---------- Informational only ------------------------------- SKED version: 2022-11-03 Schedule file: ./vo2348.skd FREQUENCY SX (default freq. code) Process ID: 47557 Printer commands: lj, ljp Current yyyyddd: 2022348 (2022.95)( 19928 MJD, WED. 14 DEC.) Greenwich sidereal time: 23:33:33 (18:00:00 UT) Sun's RA and DEC: 17h 28.3m -23d 14.1 =========================================================== Important Station Information Katherine, Ny Alesund-North, and Santa Maria were tagged along to this schedule file. The minimum subnet size was changed from three to two for this session. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gs Hb Ke K2 Mg Nn Oe Ow Sa Yj Wf 0059+581 22348-180000| 30 30 30 30 30 30 30 30| OJ287 22348-180000| 30 30 30 | =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gs Hb Ke K2 Mg Nn Oe Ow Sa Yj Wf 3C274 22349-175806| 30 30 30 | 3C418 22349-175848| 30 30 30 30 30 30 30 30| =========================================================== SKED Summary from file ./vo2348.skd for experiment VO2348 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 13.1 Min = 0.0 Max = 2880.0 (Baseline Mg-Ow on 1846+322) RMS = 62.8 Total time: 1439 minutes ( 24.0 hours). Key: Gs=GGAO12M Hb=HOBART12 Ke=KATH12M K2=KOKEE12M Mg=MACGO12M Nn=NYALE13N Oe=ONSA13NE Ow=ONSA13SW Sa=RAEGSMAR Yj=RAEGYEB Wf=WESTFORD Gs Hb Ke K2 Mg Nn Oe Ow Sa Yj Wf Avg % obs. time: 38 21 15 30 37 29 31 30 22 31 29 28 % cal. time: 5 3 2 4 5 4 4 4 3 4 4 4 % slew time: 41 24 17 18 24 9 16 15 8 13 41 21 % idle time: 14 51 66 46 33 58 48 50 66 51 26 47 total # scans: 1105 599 419 871 1058 827 891 853 634 894 822 815 # scans/hour : 46 25 17 36 44 34 37 36 26 37 34 34 Avg scan (sec): 30 30 30 30 30 30 30 30 30 30 30 30 # data tracks: 16 16 16 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 16 16 16 16 Total TB(M5): 33.9 18.4 12.9 26.8 32.5 25.4 27.4 26.2 19.5 27.5 25.3 25.1 # OF OBSERVATIONS BY BASELINE | Gs Hb Ke K2 Mg Nn Oe Ow Sa Yj Wf Total ----------------------------------------------------------------- Gs| 32 42 295 887 495 358 394 475 573 719 4270 Hb| 360 483 110 35 48 51 0 55 34 1208 Ke| 321 75 65 79 81 16 52 39 1130 K2| 403 192 96 110 109 115 248 2372 Mg| 397 305 330 371 451 624 3953 Nn| 569 569 363 496 378 3559 Oe| 756 361 577 312 3461 Ow| 358 469 356 3474 Sa| 435 358 2846 Yj| 418 3641 Wf| 3486 Number of 2-station scans: 538 Number of 3-station scans: 759 Number of 4-station scans: 392 Number of 5-station scans: 239 Number of 6-station scans: 104 Number of 7-station scans: 122 Number of 8-station scans: 125 Number of 9-station scans: 41 Number of 10-station scans: 1 Number of 11-station scans: 0 Total number of scans: 2321 Total number of obs: 16700 Total integrated obs-time: 501000 Average obs-time: 30.0 Histogram of observation durations Dur: 30 #Obs: | Average X-band SNRs by baseline | Gs Hb Ke K2 Mg Nn Oe Ow Sa Yj Wf AVG ---------------------------------------------------------------- Gs| 38 36 43 54 55 44 45 68 61 65 56 Hb| 62 43 34 64 53 52 - 47 37 49 Ke| 47 40 57 44 43 44 50 32 51 K2| 59 51 33 32 44 43 46 46 Mg| 55 41 42 64 57 63 54 Nn| 74 77 86 90 68 71 Oe| 70 80 80 51 64 Ow| 84 89 52 66 Sa| 113 84 81 Yj| 78 78 Wf| 64 Average S-band SNRs by baseline | Gs Hb Ke K2 Mg Nn Oe Ow Sa Yj Wf AVG ---------------------------------------------------------------- Gs| 25 27 34 41 45 37 38 52 46 45 43 Hb| 34 30 27 39 29 29 - 32 21 31 Ke| 34 29 40 31 30 34 37 22 33 K2| 40 42 33 32 39 37 31 35 Mg| 41 33 34 44 41 39 39 Nn| 53 56 62 63 45 51 Oe| 50 58 57 34 47 Ow| 59 63 35 48 Sa| 77 52 57 Yj| 47 55 Wf| 42 =========================================================== Recording mode Name Code GEOSX SX Recording mode for: GGAO12M HOBART12 KATH12M KOKEE12M ONSA13NE ONSA13SW RAEGSMAR RAEGYEB 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 Recording mode for: NYALE13N 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 =========================================================== Minor Options BegScan Rel 1.00 EndScan Rel 1.00 StatWt Abs 1.00 =========================================================== Major Options Subnet GsHbKeK2MgNnOeOwSaYjWf SkyCov Yes AllBlGood Yes MaxAngle 180.00 MinAngle 30.00 MinBetween 20 MinSunDist 15.00 MaxSlewTime 300 TimeWindow 24.00 MinSubNetSize 2 NumSubNet 2 Best 60 FillIn Yes FillMinSub 3 FillMinTime 120 FillBest 80 Add_ps 5.0 El_noise 0.0 SNRWts Yes SplitTwins No =========================================================== Weighted Station 1 GGAO12M 2.00 2 HOBART12 3.00 5 MACGO12M 1.00 =========================================================== 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) Gs Hb Ke K2 Mg Nn Oe Ow Sa Yj Gs Hb Ke K2 Mg Nn Oe Ow Sa Yj Hb 15 Hb 15 Ke 15 15 Ke 15 15 K2 15 15 15 K2 15 15 15 Mg 15 15 15 15 Mg 15 15 15 15 Nn 15 15 15 15 15 Nn 15 15 15 15 15 Oe 15 15 15 15 15 15 Oe 15 15 15 15 15 15 Ow 15 15 15 15 15 15 15 Ow 15 15 15 15 15 15 15 Sa 15 15 15 15 15 15 15 15 Sa 15 15 15 15 15 15 15 15 Yj 15 15 15 15 15 15 15 15 15 Yj 15 15 15 15 15 15 15 15 15 Wf 15 15 15 15 15 15 15 15 15 15 Wf 15 15 15 15 15 15 15 15 15 15