Session Notes for VO (VLBI Global Observing System-Operations) session: vo2181 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== ----- Parameter listing -------------------------------------- Experiment: VO2181 Description VGOS broadband session Scheduler: NASA Correlator: SHAO Start: 2022-181-18:00:00 End: 2022-182-18:00:00 ---------- 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: 2022-05-12 Schedule file: ./vo2181.skd FREQUENCY SX (default freq. code) Process ID: 61985 Printer commands: lj, ljp Current yyyyddd: 2022181 (2022.50)( 19761 MJD, THUR 30 JUN.) Greenwich sidereal time: 12:35:08 (18:00:00 UT) Sun's RA and DEC: 6h 38.9m 23d 8.1 =========================================================== Important Station Information Onsala-East was tagged along this schedule file. Wettzell-South will be down due to scheduled maintenance. =========================================================== There is no intensive session during this session because Wettzell-South will be down due to scheduled maintenace. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gs Is K2 Mg Oe Ow Yj Wf 1849+670 22181-180000| 30 30 30 30 30 30 | 0235+164 22181-180108| 30 30 30 | 1149-084 22181-180108| 30 30 30 30 30| =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gs Is K2 Mg Oe Ow Yj Wf 0059+581 22182-175335| 30 30 30 30 | 0738+491 22182-175336| 30 30 30 | 1144+402 22182-175449| 30 30 30 30 30| 1705+018 22182-175557| 30 30 30 30 | OJ287 22182-175702| 30 30 30 30| 1418+546 22182-175705| 30 30 30 | 1749+096 22182-175813| 30 30 30 30 | 0109+224 22182-175833| 30 30 30| =========================================================== SKED Summary from file ./vo2181.skd for experiment VO2181 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 15.8 Min = 0.0 Max = 1728.0 (Baseline Gs-Wf on 1124-186) RMS = 40.8 Total time: 1439 minutes ( 24.0 hours). Key: Gs=GGAO12M Is=ISHIOKA K2=KOKEE12M Mg=MACGO12M Oe=ONSA13NE Ow=ONSA13SW Yj=RAEGYEB Wf=WESTFORD Gs Is K2 Mg Oe Ow Yj Wf Avg % obs. time: 37 38 26 37 32 33 37 34 34 % cal. time: 5 5 3 5 4 4 5 5 5 % slew time: 40 24 16 25 17 17 15 48 26 % idle time: 17 33 53 32 46 44 42 13 35 total # scans: 1076 1081 749 1070 926 952 1065 974 986 # scans/hour : 45 45 31 45 39 40 44 41 41 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): 33.1 33.2 23.0 32.9 28.4 29.2 32.7 29.9 30.3 # OF OBSERVATIONS BY BASELINE | Gs Is K2 Mg Oe Ow Yj Wf Total -------------------------------------------------- Gs| 340 329 747 382 378 608 756 3540 Is| 490 467 657 672 617 291 3534 K2| 580 253 228 151 348 2379 Mg| 295 261 355 601 3306 Oe| 849 698 439 3573 Ow| 763 420 3571 Yj| 484 3676 Wf| 3339 Number of 2-station scans: 0 Number of 3-station scans: 774 Number of 4-station scans: 792 Number of 5-station scans: 231 Number of 6-station scans: 15 Number of 7-station scans: 58 Number of 8-station scans: 94 Total number of scans: 1964 Total number of obs: 13459 Total integrated obs-time: 403770 Average obs-time: 30.0 Histogram of observation durations Dur: 30 #Obs: | Average X-band SNRs by baseline | Gs Is K2 Mg Oe Ow Yj Wf AVG ------------------------------------------------- Gs| 41 46 55 48 48 59 67 55 Is| 65 49 52 50 54 50 52 K2| 59 41 41 49 50 53 Mg| 45 44 51 66 55 Oe| 63 81 57 59 Ow| 78 58 59 Yj| 76 67 Wf| 62 Average S-band SNRs by baseline | Gs Is K2 Mg Oe Ow Yj Wf AVG ------------------------------------------------- Gs| 32 35 40 37 36 42 44 39 Is| 49 36 40 39 41 34 40 K2| 41 32 33 35 33 39 Mg| 32 31 34 40 38 Oe| 46 56 36 43 Ow| 54 36 42 Yj| 45 46 Wf| 39 =========================================================== Recording mode Name Code GEOSX SX Recording mode for: GGAO12M ISHIOKA 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 GsIsK2MgOeOwYjWf 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 2 ISHIOKA 3.00 4 MACGO12M 1.00 7 RAEGYEB 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 Is K2 Mg Oe Ow Yj Gs Is K2 Mg Oe Ow Yj Is 15 Is 15 K2 15 15 K2 15 15 Mg 15 15 15 Mg 15 15 15 Oe 15 15 15 15 Oe 15 15 15 15 Ow 15 15 15 15 15 Ow 15 15 15 15 15 Yj 15 15 15 15 15 15 Yj 15 15 15 15 15 15 Wf 15 15 15 15 15 15 15 Wf 15 15 15 15 15 15 15