Session Notes for VO (VLBI Global Observing System-Operations) session: vo3194 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== ----- Parameter listing -------------------------------------- Experiment: VO3194 Description VGOS broadband session Scheduler: NASA Correlator: SHAO Start: 2023-194-18:00:00 End: 2023-195-18:00:00 ---------- 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: 2023-02-10 Schedule file: ./vo3194.skd FREQUENCY SX (default freq. code) Process ID: 10753 Printer commands: lj, ljp Current yyyyddd: 2023194 (2023.53)( 20139 MJD, THUR 13 JUL.) Greenwich sidereal time: 13:25:26 (18:00:00 UT) Sun's RA and DEC: 7h 31.2m 21d 46.8 =========================================================== Important Station Information GGAO was 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 Hb Is K2 Mg Yj Wf Ws 0235+164 23194-180000| 30 30 30 30 | 3C274 23194-180000| 30 30 30 30| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gs Hb Is K2 Mg Yj Wf Ws 0552+398 23195-175812| 30 30 30 30 30 30 30| 2329-384 23195-175920| 30 30 30 | 1040+244 23195-175923| 30 30 30| =========================================================== SKED Summary from file ./vo3194.skd for experiment VO3194 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 13.6 Min = 0.0 Max = 205.7 (Baseline Is-Ws on 1213-172) RMS = 19.8 Total time: 1440 minutes ( 24.0 hours). Key: Gs=GGAO12M Hb=HOBART12 Is=ISHIOKA K2=KOKEE12M Mg=MACGO12M Yj=RAEGYEB Wf=WESTFORD Ws=WETTZ13S Gs Hb Is K2 Mg Yj Wf Ws Avg % obs. time: 17 17 32 27 30 34 28 34 27 % cal. time: 2 2 4 4 4 4 4 4 4 % slew time: 18 20 20 17 20 14 44 21 22 % idle time: 62 59 42 51 45 47 23 40 47 total # scans: 484 497 919 788 868 971 809 966 787 # scans/hour : 20 21 38 33 36 40 34 40 33 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): 14.9 15.3 28.2 24.2 26.7 29.8 24.9 29.7 24.2 # OF OBSERVATIONS BY BASELINE | Gs Hb Is K2 Mg Yj Wf Ws Total -------------------------------------------------- Gs| 17 160 180 343 346 419 306 1771 Hb| 383 387 156 39 25 93 1100 Is| 529 303 378 198 455 2406 K2| 479 112 295 155 2137 Mg| 439 534 369 2623 Yj| 573 853 2740 Wf| 492 2536 Ws| 2723 Number of 2-station scans: 0 Number of 3-station scans: 1033 Number of 4-station scans: 446 Number of 5-station scans: 168 Number of 6-station scans: 58 Number of 7-station scans: 33 Number of 8-station scans: 0 Total number of scans: 1738 Total number of obs: 9018 Total integrated obs-time: 270540 Average obs-time: 30.0 Histogram of observation durations Dur: 30 #Obs: | Average X-band SNRs by baseline | Gs Hb Is K2 Mg Yj Wf Ws AVG ------------------------------------------------- Gs| 39 40 41 58 63 65 62 58 Hb| 54 42 33 47 39 51 46 Is| 69 45 48 42 58 54 K2| 56 41 43 41 52 Mg| 50 62 48 53 Yj| 69 106 72 Wf| 68 61 Ws| 73 Average S-band SNRs by baseline | Gs Hb Is K2 Mg Yj Wf Ws AVG ------------------------------------------------- Gs| 25 39 35 46 47 44 57 46 Hb| 38 29 25 29 22 36 32 Is| 50 38 42 35 57 45 K2| 40 36 30 43 39 Mg| 38 40 46 40 Yj| 42 85 55 Wf| 51 41 Ws| 62 =========================================================== Recording mode Name Code GEOSX SX Recording mode for: GGAO12M HOBART12 ISHIOKA KOKEE12M 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 GsHbIsK2MgYjWfWs 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 2 HOBART12 2.00 =========================================================== 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 Is K2 Mg Yj Wf Gs Hb Is K2 Mg Yj Wf Hb 15 Hb 15 Is 15 15 Is 15 15 K2 15 15 15 K2 15 15 15 Mg 15 15 15 15 Mg 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