Session Notes for VO (VLBI Global Observing System-Operations) session: vo2321 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== ----- Parameter listing -------------------------------------- Experiment: VO2321 Description VGOS broadband session Scheduler: NASA Correlator: WASH Start: 2022-321-18:00:00 End: 2022-322-18:00:00 ---------- 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: 2022-10-17 Schedule file: ./vo2321.skd FREQUENCY SX (default freq. code) Process ID: 44419 Printer commands: lj, ljp Current yyyyddd: 2022321 (2022.88)( 19901 MJD, THUR 17 NOV.) Greenwich sidereal time: 21:47:06 (18:00:00 UT) Sun's RA and DEC: 15h 32.1m -19d 6.1 =========================================================== Important Station Information GGAO and Onsala-West were tagged along to this schedule file. =========================================================== There are no observations for Kokee and Wettzell-South from 18:15 U.T. to 19:45 U.T. Kokee and Wettzell-South will participate in an intensive session during this period. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gs K2 Mg Oe Ow Yj Wf Ws 0613+570 22321-180000| 30 30 30 30 30 30 30| 1606+106 22321-180130| 30 30 30 30 30 | =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gs K2 Mg Oe Ow Yj Wf Ws 1156+295 22322-175725| 30 30 30 30 | 1803+784 22322-175836| 30 30 30 30 30 30 30| =========================================================== SKED Summary from file ./vo2321.skd for experiment VO2321 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 15.7 Min = 0.0 Max = 2468.6 (Baseline Mg-Ow on 1846+322) RMS = 67.5 Total time: 1439 minutes ( 24.0 hours). Key: Gs=GGAO12M K2=KOKEE12M Mg=MACGO12M Oe=ONSA13NE Ow=ONSA13SW Yj=RAEGYEB Wf=WESTFORD Ws=WETTZ13S Gs K2 Mg Oe Ow Yj Wf Ws Avg % obs. time: 18 22 35 36 32 40 32 37 31 % cal. time: 2 3 5 5 4 5 4 5 4 % slew time: 19 12 23 18 17 17 44 23 22 % idle time: 59 63 36 40 46 37 18 33 42 total # scans: 530 621 1014 1026 915 1140 922 1076 905 # scans/hour : 22 26 42 43 38 48 38 45 38 Avg scan (sec): 30 30 30 30 30 30 30 30 30 # data tracks: 16 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 16 Total TB(M5): 16.3 19.1 31.2 31.5 28.1 35.0 28.3 33.1 27.8 # OF OBSERVATIONS BY BASELINE | Gs K2 Mg Oe Ow Yj Wf Ws Total -------------------------------------------------- Gs| 270 484 253 287 289 462 247 2292 K2| 576 119 195 103 547 138 1948 Mg| 372 452 485 867 421 3657 Oe| 820 945 349 924 3782 Ow| 763 429 737 3683 Yj| 404 1019 4008 Wf| 322 3380 Ws| 3808 Number of 2-station scans: 0 Number of 3-station scans: 518 Number of 4-station scans: 705 Number of 5-station scans: 175 Number of 6-station scans: 124 Number of 7-station scans: 141 Number of 8-station scans: 33 Total number of scans: 1696 Total number of obs: 13279 Total integrated obs-time: 398370 Average obs-time: 30.0 Histogram of observation durations Dur: 30 #Obs: | Average X-band SNRs by baseline | Gs K2 Mg Oe Ow Yj Wf Ws AVG ------------------------------------------------- Gs| 47 61 44 45 63 66 64 57 K2| 57 37 41 47 47 51 49 Mg| 40 42 54 63 53 54 Oe| 57 66 50 75 60 Ow| 76 51 86 63 Yj| 73 97 75 Wf| 75 60 Ws| 79 Average S-band SNRs by baseline | Gs K2 Mg Oe Ow Yj Wf Ws AVG ------------------------------------------------- Gs| 38 47 37 38 48 44 60 45 K2| 41 29 32 34 31 44 36 Mg| 32 33 39 39 47 40 Oe| 41 46 33 62 45 Ow| 53 34 71 47 Yj| 45 77 54 Wf| 56 40 Ws| 65 =========================================================== Recording mode Name Code GEOSX SX Recording mode for: GGAO12M KOKEE12M ONSA13NE ONSA13SW RAEGYEB WESTFORD WETTZ13S 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 =========================================================== Minor Options BegScan Rel 1.00 EndScan Rel 1.00 StatWt Abs 1.00 =========================================================== Major Options Subnet GsK2MgOeOwYjWfWs SkyCov Yes AllBlGood Yes MaxAngle 180.00 MinAngle 30.00 MinBetween 20 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 =========================================================== Weighted Station 1 GGAO12M 2.00 3 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 K2 Mg Oe Ow Yj Wf Gs K2 Mg Oe Ow Yj Wf K2 15 K2 15 Mg 15 15 Mg 15 15 Oe 15 15 15 Oe 15 15 15 Ow 15 15 15 15 Ow 15 15 15 15 Yj 15 15 15 15 15 Yj 15 15 15 15 15 Wf 15 15 15 15 15 15 Wf 15 15 15 15 15 15 Ws 15 15 15 15 15 15 15 Ws 15 15 15 15 15 15 15