Session Notes for VO (VLBI Global Observing System-Operations) session: vo3138 Prepared by C. Thomas, NVI, Inc./GSFC =========================================================== ----- Parameter listing -------------------------------------- Experiment: VO3138 Description VGOS broadband session Scheduler: NASA Correlator: WASH Start: 2023-138-18:00:00 End: 2023-139-18:00:00 ---------- 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: ./vo3138.skd FREQUENCY SX (default freq. code) Process ID: 46932 Printer commands: lj, ljp Current yyyyddd: 2023138 (2023.38)( 20083 MJD, THUR 18 MAY.) Greenwich sidereal time: 09:44:39 (18:00:00 UT) Sun's RA and DEC: 3h 41.1m 19d 36.6 =========================================================== First observations Source Start DURATIONS name yyddd-hhmmss Gs Hb Is K2 Mg Yj Wf 0059+581 23138-180000| 30 30 30| 3C446 23138-180000| 30 30 30 30 | =========================================================== Last observations Source Start DURATIONS name yyddd-hhmmss Gs Hb Is K2 Mg Yj Wf 0700-197 23139-175601| 30 30 30 | 2229+695 23139-175601| 30 30 30| 0215+015 23139-175719| 30 30 30 30| 0446+112 23139-175827| 30 30 30| 1846+322 23139-175827| 30 30 30 | =========================================================== SKED Summary from file ./vo3138.skd for experiment VO3138 (all scans with at least one subnet station) Average number of obs. per baseline per source(normalized by up-time) = 17.6 Min = 0.0 Max = 864.0 (Baseline Gs-Wf on 1124-186) RMS = 36.0 Total time: 1439 minutes ( 24.0 hours). Key: Gs=GGAO12M Hb=HOBART12 Is=ISHIOKA K2=KOKEE12M Mg=MACGO12M Yj=RAEGYEB Wf=WESTFORD Gs Hb Is K2 Mg Yj Wf Avg % obs. time: 33 18 29 37 36 24 30 29 % cal. time: 4 2 4 5 5 3 4 4 % slew time: 36 20 17 23 23 9 43 25 % idle time: 26 58 49 34 35 63 22 41 total # scans: 938 512 839 1076 1022 679 873 848 # scans/hour : 39 21 35 45 43 28 36 35 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): 28.8 15.7 25.8 33.1 31.4 20.9 26.8 26.1 # OF OBSERVATIONS BY BASELINE | Gs Hb Is K2 Mg Yj Wf Total --------------------------------------------- Gs| 30 261 376 669 547 734 2617 Hb| 384 464 171 36 35 1120 Is| 702 344 247 185 2123 K2| 691 195 349 2777 Mg| 318 621 2814 Yj| 483 1826 Wf| 2407 Number of 2-station scans: 0 Number of 3-station scans: 1181 Number of 4-station scans: 329 Number of 5-station scans: 150 Number of 6-station scans: 55 Number of 7-station scans: 0 Total number of scans: 1715 Total number of obs: 7842 Total integrated obs-time: 235260 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 AVG -------------------------------------------- Gs| 33 39 41 49 59 54 50 Hb| 50 42 32 41 27 42 Is| 66 48 55 48 54 K2| 55 45 47 52 Mg| 56 53 51 Yj| 68 59 Wf| 55 Average S-band SNRs by baseline | Gs Hb Is K2 Mg Yj Wf AVG -------------------------------------------- Gs| 23 33 30 36 42 37 36 Hb| 34 27 23 26 18 28 Is| 47 37 44 34 40 K2| 36 32 29 35 Mg| 37 33 35 Yj| 40 39 Wf| 35 =========================================================== Recording mode Name Code GEOSX SX Recording mode for: GGAO12M HOBART12 ISHIOKA KOKEE12M 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 GsHbIsK2MgYjWf 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 4 KOKEE12M 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 Hb Is K2 Mg Yj Gs Hb Is K2 Mg Yj 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