Session Notes for VO (VLBI Global Observing System-Operations) session: vo2335 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== ----- Parameter listing -------------------------------------- Experiment: VO2335 Description VGOS broadband session Scheduler: NASA Correlator: WETZ Start: 2022-335-18:00:00 End: 2022-336-18:00:00 ---------- 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: ./vo2335.skd FREQUENCY SX (default freq. code) Process ID: 83738 Printer commands: lj, ljp Current yyyyddd: 2022335 (2022.92)( 19915 MJD, THUR 1 DEC.) Greenwich sidereal time: 22:42:18 (18:00:00 UT) Sun's RA and DEC: 16h 31.4m -21d 52.5 =========================================================== Important Station Information GGAO was tagged along to this schedule file. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gs K2 Mg Oe Ow Yj Wf 1751+288 22335-180000| 30 30 30 30 30 30 30| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gs K2 Mg Oe Ow Yj Wf 1751+288 22336-175848| 30 30 30 30| 1418+546 22336-175929| 30 30 30 | =========================================================== SKED Summary from file ./vo2335.skd for experiment VO2335 (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 = 2057.1 (Baseline Mg-Ow on 1846+322) RMS = 72.0 Total time: 1440 minutes ( 24.0 hours). Key: Gs=GGAO12M K2=KOKEE12M Mg=MACGO12M Oe=ONSA13NE Ow=ONSA13SW Yj=RAEGYEB Wf=WESTFORD Gs K2 Mg Oe Ow Yj Wf Avg % obs. time: 20 23 37 38 38 39 34 33 % cal. time: 3 3 5 5 5 5 4 4 % slew time: 21 13 24 19 19 16 45 23 % idle time: 56 60 33 36 36 39 15 40 total # scans: 563 674 1071 1098 1099 1118 969 941 # scans/hour : 23 28 45 46 46 47 40 39 Avg scan (sec): 30 30 30 30 30 30 30 30 # data tracks: 16 16 16 16 16 16 16 # Mk5 tracks: 16 16 16 16 16 16 16 Total TB(M5): 17.3 20.7 32.9 33.7 33.8 34.3 29.8 28.9 # OF OBSERVATIONS BY BASELINE | Gs K2 Mg Oe Ow Yj Wf Total --------------------------------------------- Gs| 276 508 290 292 316 471 2153 K2| 645 151 155 95 595 1917 Mg| 441 442 490 940 3466 Oe| 1082 999 348 3311 Ow| 993 345 3309 Yj| 417 3310 Wf| 3116 Number of 2-station scans: 0 Number of 3-station scans: 939 Number of 4-station scans: 413 Number of 5-station scans: 175 Number of 6-station scans: 166 Number of 7-station scans: 36 Total number of scans: 1729 Total number of obs: 10291 Total integrated obs-time: 308730 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 AVG -------------------------------------------- Gs| 46 61 43 43 63 66 55 K2| 59 35 35 46 49 49 Mg| 41 41 59 67 57 Oe| 55 71 53 56 Ow| 72 55 56 Yj| 79 69 Wf| 62 Average S-band SNRs by baseline | Gs K2 Mg Oe Ow Yj Wf AVG -------------------------------------------- Gs| 38 48 36 36 48 47 43 K2| 43 31 31 37 33 37 Mg| 33 33 42 43 41 Oe| 41 51 37 42 Ow| 51 37 41 Yj| 48 48 Wf| 41 =========================================================== Recording mode Name Code GEOSX SX Recording mode for: GGAO12M KOKEE12M ONSA13NE ONSA13SW 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 =========================================================== Minor Options BegScan Rel 1.00 EndScan Rel 1.00 StatWt Abs 1.00 =========================================================== Major Options Subnet GsK2MgOeOwYjWf 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 Gs K2 Mg Oe Ow Yj 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