Session Notes for VO (VLBI Global Observing System-Operations) session: vo2187 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== ----- Parameter listing -------------------------------------- Experiment: VO2187 Description VGOS broadband session Scheduler: NASA Correlator: BONN Start: 2022-187-18:00:00 End: 2022-188-18:00:00 ---------- 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: ./vo2187.skd FREQUENCY SX (default freq. code) Process ID: 75780 Printer commands: lj, ljp Current yyyyddd: 2022187 (2022.51)( 19767 MJD, WED. 6 JUL.) Greenwich sidereal time: 12:58:47 (18:00:00 UT) Sun's RA and DEC: 7h 3.6m 22d 37.8 =========================================================== Important Station Information Onsala-East was tagged along to this schedule file. Wettzell-South is down due to scheduled maintenance. =========================================================== There is no intensive session scheduled during this session. =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gs Is K2 Mg Oe Ow Yj Wf 0059+581 22187-180000| 30 30 30 30 30 30 30 30| 1741-038 22187-180108| 30 30 30 30 | =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gs Is K2 Mg Oe Ow Yj Wf 2229+695 22188-175916| 30 30 30 30 30 30 30 30| =========================================================== SKED Summary from file ./vo2187.skd for experiment VO2187 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 15.2 Min = 0.0 Max = 180.0 (Baseline Gs-Oe on 0454-234) RMS = 18.3 Total time: 1440 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: 38 38 27 37 31 32 37 32 34 % cal. time: 5 5 4 5 4 4 5 4 5 % slew time: 40 24 16 25 16 17 15 46 25 % idle time: 17 32 52 32 47 46 42 16 36 total # scans: 1084 1088 773 1075 901 930 1064 930 980 # scans/hour : 45 45 32 45 38 39 44 39 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): 33.3 33.4 23.7 33.0 27.7 28.6 32.7 28.6 30.1 # OF OBSERVATIONS BY BASELINE | Gs Is K2 Mg Oe Ow Yj Wf Total -------------------------------------------------- Gs| 351 346 774 419 400 620 728 3638 Is| 511 502 606 647 615 302 3534 K2| 591 238 211 169 348 2414 Mg| 279 243 362 588 3339 Oe| 843 710 416 3511 Ow| 762 399 3505 Yj| 452 3690 Wf| 3233 Number of 2-station scans: 0 Number of 3-station scans: 776 Number of 4-station scans: 786 Number of 5-station scans: 206 Number of 6-station scans: 23 Number of 7-station scans: 67 Number of 8-station scans: 92 Total number of scans: 1950 Total number of obs: 13432 Total integrated obs-time: 402960 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 51 45 45 56 59 51 Is| 65 48 53 50 53 52 52 K2| 58 41 41 47 52 53 Mg| 43 43 53 61 52 Oe| 59 75 55 56 Ow| 72 55 56 Yj| 74 64 Wf| 59 Average S-band SNRs by baseline | Gs Is K2 Mg Oe Ow Yj Wf AVG ------------------------------------------------- Gs| 31 32 38 33 32 39 41 36 Is| 46 35 38 36 39 33 37 K2| 38 30 29 31 30 36 Mg| 29 28 32 37 35 Oe| 42 52 32 39 Ow| 49 32 39 Yj| 42 43 Wf| 36 =========================================================== 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