==================================== r4957 ===================================== Ft : Elevation encoder (02:28-03:06). Mc : Observed only 4 hours (14:11-18:01). Nt : Late start 19:23 due to antenna control problems. No ONSOURCE messages due to error in antenna status. Ny : Observed with warm receiver. Sv : Antenna problems. Stopped at 09:07. Wn : Power drop (03:10-03:20). Scans could be affected. Wz : Power drop (03:10-03:20). Some scans missed. Yg : DBBC problems (23:13-02:14) (13:17-14:25). No problems found for : Bd, Ht, Kk, Ys ================================ r4957bd READY ================================= 2020-07-30 18:25:34 r4957 Badary, Ready-message Session r4957 Ready message for Badary. Mark5B+ recorder. GPS-FMOUT: 2.528 microseconds. Wx: Temperature (C):14; Pressure (mBar):912; Humdity (%):74 Sky conditions: cloudy State of cryogenic system: on (cold) Pointing values: SEFD X RCP/S RCP Source Az/El Offset1 Offset2 583/380 Taurus A 214/56 -0.01302 -0.01762 Tsys X RCP/S RCP: 48/47 Operator Tomilov ================================ r4957bd START ================================= 2020-07-30 18:32:26 r4957 Badary, Start-message Badary started r4957 session as scheduled at 212/18:30:00 UTC. First source nrao512 Operators Plotnikova, Polubentsev ================================= r4957bd STOP ================================= 2020-07-31 18:30:36 r4957 Badary, Stop-message Badary ends r4957 observing 293 Session were recorded on module IAAC+022/8000 Operators Plotnikova, Polubentsev, Kotlova, Tomilov ================================ r4957ft READY ================================= 2020-07-30 18:29:10 R4957, Fortaleza, Ready-message Session R4957 ready-message for Fortaleza. ------------------------------------------- Comments: First source: NRAO512 at 212 - 18:30:00 UT. FMOUT-GPS: 0.531 microseconds. Sky Conditions: Sky is partly cloudy. Cable difference is: longer cable makes the reading larger by 114.6 microseconds and is nominal. Pointing values: SEFD (X/S) Source Az/El Offset1 Offset2 -- / -- Orion-A 265/67 0.067 -0.006 -- FORTALEZA VLBI TEAM. ================================ r4957ft START ================================= 2020-07-30 18:30:13 R4957, Fortaleza, Start-message Session R4957 Start message for Fortaleza. -------------------------------------------- Started recording with source: NRAO512 at 212 18:30:00 UT as scheduled. -- FORTALEZA VLBI TEAM. ================================= r4957ft STOP ================================= 2020-07-31 18:43:54 r4957, Fortaleza, Stop-message End of schedule: 213 - 18:29:28 UT Comments: Scans from 02:28 UT to 03:06 UT were missed due to an elevation encoder error. Data will be e-transferred to Waco. Disk Inventory Size 2000GB = 03 Size 4000GB = 02 Size 8000GB = 10 Size 16000GB = 01 Other Size (1000GB) = 01 Last update: JUL/2020. ================================ r4957ht READY ================================= 2020-07-30 18:18:01 r4957, Hart15M, Ready-message Session r4957 ready message for Hart15M. ---------------------------------------- Comments: Hart15M is ready to start R4957. All systems are nominal. Session is being operated remotely. First source: NRAO512 at 18:30:00 UT FMOUT-GPS: 2.4930 microseconds Wx: Temperature (C): 9.3 Pressure (mBar): 872.7 Humidity (%): 41.9 Sky Conditions: Clear skies Cable difference is: na Pointing values: na Tsys (x1/s/x2): 35.9/20.6/44.1 ================================ r4957ht START ================================= 2020-07-30 18:30:00 r4957, Hart15M, Autostart-message Session r4957 auto-start message for Hart15M. --------------------------------------------- Started recording with source: nrao512 at 212.18:30:00 UT ================================= r4957ht STOP ================================= 2020-07-31 18:33:18 r4957, Hart15M, Stop-message Session r4957 stop message for Hart15M. --------------------------------------- Comments: Hart15M has completed R4957. All scans recorded without incident. Weather was clear throughout. Data will be e-shipped to Washington. Disk Inventory: A 0, B 2, C 0, D 1, E 1, F 0, G 1, H 0, (other larger) 8 Observation finished at: 18:24:19 UT ================================ r4957kk READY ================================= 2020-07-30 19:33:01 r4957, Kokee Park, Ready-message Session r4957 ready message for Kokee Park. ------------------------------------------- Comments: Cable cal and pointing checks done prior to experiment i20212. First source: 0955+476 at 212/1936:44 UT FMOUT-GPS: +8.43 microseconds Wx: Temperature (C): 14.7 Pressure (mBar): 888.6 Humidity (%): 100.0 Sky Conditions: overcast Cable difference is: longer cable makes the reading smaller by 51.7 microseconds and is nominal Pointing values: SEFD X/S Source Az/El Offset1 Offset2 2013/794 taurusa 83/55 -0.005 0.008 2107/718 casa 328/36 0.004 0.008 Tsys (x1/s/x2): 86/39/58 ================================ r4957kk START ================================= 2020-07-30 19:36:49 r4957, Kokee Park, Autostart-message Session r4957 auto-start message for Kokee Park. ------------------------------------------------ Started recording with source: 0955+476 at 212.19:36:44 UT ================================= r4957kk STOP ================================= 2020-07-31 18:33:56 r4957, Kokee Park, Stop-message Session r4957 stop message for Kokee Park. ------------------------------------------ Comments: Diskpack UAO-0020 will be sent out via fedex AWB#7710 7994 6470. Disk Inventory: A 0, B 0, C 0, D 18, E 1, F 0, G 2, H 2, (other larger) 7 Observation finished at: 213/1829:02 UT ================================ r4957mc READY ================================= 2020-07-31 14:42:02 r4957, Medicina, Ready-message Session r4957 ready message for Medicina. ----------------------------------------- Comments: started asap, as antenna test First source: 0955+476 at 14:11 UT GPS-FMOUT: 11.6 microseconds Wx: Temperature (C): 34.8 Pressure (mBar): 1011.0 Humidity (%): 50.0 Sky Conditions: cler Cable difference is: na Pointing values: SEFD X/S Source Az/El Offset1 Offset2 400/611 3c295 59/61 0.009 0.005 Tsys (x1/s/x2): 38.8/60.7/31.1 ================================ r4957mc START ================================= 2020-07-31 14:42:40 r4957, Medicina, Autostart-message Session r4957 auto-start message for Medicina. ---------------------------------------------- Started recording with source: 1424+240 at 213.14:25:31 UT ================================= r4957mc STOP ================================= 2020-08-01 14:30:29 r4957, Medicina, Stop-message Session r4957 stop message for Medicina. ---------------------------------------- Comments: all scans done from 14:11 to 18:01 Observation finished at: 18:01 UT ================================ r4957nt READY ================================= 2020-07-30 19:40:28 r4957, Noto, Ready-message Session r4957 ready message for Noto. ------------------------------------- Comments: late start at 19:23 UT due to antenna control problems First source: 1639-062 at 19:23 UT GPS-FMOUT: 58.64 microseconds Wx: Temperature (C): 26.7 Pressure (mBar): 1015 Humidity (%): 56 Sky Conditions: clear sky Cable difference is: longer cable makes the reading larger by 0 microseconds and is nominal Pointing values: SEFD X/S Source Az/El Offset1 Offset2 900/730 3c295 29/67 0.003 -0.005 Tsys (x1/s/x2): 90/110/0 ================================= r4957nt STOP ================================= 2020-07-31 18:32:54 r4957, Noto, Stop-message Session r4957 stop message for Noto. ------------------------------------ Comments: ok Problem scans: Source Scan start Explanation of problem 0 0 0 Disk Inventory: A 0, B 0, C 0, D 0, E 0, F 0, G 0, H 0, (other larger) 0 Observation finished at: 18:29:28 UT ================================ r4957ny READY ================================= 2020-07-30 18:02:29 r4957, Ny-Alesund, Ready-message Session r4957 ready message for Ny-Alesund. ------------------------------------------- Comments: Warm receiver PKS-0008/2000 First source: NRAO512 at 18:30:00 UT GPS-FMOUT: 155.31 microseconds Wx: Temperature (C): 8.7 Pressure (mBar): 1013.7 Humidity (%): 92 Sky Conditions: Sunny Cable difference is: longer cable makes the reading larger by 691 microseconds and is nominal Pointing values: SEFD X/S Source Az/El Offset1 Offset2 3177/2397 cygnusa 99/42 0.0025 -0.0067 3145/2217 casa 44/51 -0.0086 -0.0046 3700/2581 taurusa 326/12 0.0064 -0.026 Tsys (x1/s/x2): 180/237/193 ================================ r4957ny START ================================= 2020-07-30 18:30:00 r4957, Ny-Alesund, Autostart-message Session r4957 auto-start message for Ny-Alesund. ------------------------------------------------ Started recording with source: nrao512 at 212.18:30:00 UT ================================= r4957ny STOP ================================= 2020-07-31 18:41:00 r4957, Ny-Alesund, Stop-message Session r4957 stop message for Ny-Alesund. ------------------------------------------ Disk Inventory: A 0, B 0, C 0, D 6, E 0, F 0, G 0, H 0, (other larger) 10 Observation finished at: 18:29:30 UT ================================ r4957sv READY ================================= 2020-07-31 05:19:59 R4957. Svetloe, Ready-message. Sessions R4957 Ready-message for Svetloe. ----------------------------------------------------------- Mark5B+ recorder. GPS-FMOUT: 1.6658 microseconds. Wx: Temperature (C): 16,7; Pressure(mBar): 995.8; Humidity(%): 68.9. Sky conditions: cloudy. Pointing values: SEFD X/S Source Az/El Offset1 Offset2 348/-- CygA 87/47 0.01071 0.00309 Tsys (X/S): 79/57. S-receiver RFI. azeloff=0d,0d Operator Baykova. -- Best regards, operator vlbi(Svetloe). ================================ r4957sv START ================================= 2020-07-31 05:21:44 R4957, Svetloe. Start-message. Session r4957 Start-message for Svetloe. ------------------------------------------------ Svetloe started r4957 session as schedule at 212/18:30:00 UT. First source NRA0512 Mark5B+ recorder. Operator Baykova. -- Best regards, operator vlbi(Svetloe). ================================= r4957sv STOP ================================= 2020-07-31 10:09:33 R4957. Svetloe, Stop- message. Session R4957 Stop-message for Svetloe. ---------------------------------------- Svetloe ends R4957 observing201. Scans 213-017,213-1828 antenna problems Module USN-0032/4000/1024. Operator Slobojaninova. -- Best regards, operator vlbi(Svetloe). ================================= r4957sv STOP ================================= 2020-07-31 10:16:32 R4957. Svetloe, Stop- message. Session R4957 Stop-message for Svetloe. ---------------------------------------- Svetloe ends R4957 observing 201. Scans 213-0907 - 213-1828 antenna problems Module USN-0032/4000/1024. Operator Slobojaninova. -- Best regards, operator vlbi(Svetloe). ================================ r4957wn START ================================= 2020-07-30 18:35:27 r4957, Wettzell (wn), Start-message Wettzell (wn) started r4957 at scheduled time. First source (wn): NRAO512 at 18:30 UT (start data). System status: OK Automatic meteo report: cloud coverage of 0.0%, no rain, light air (1 Bft/4.32 km/h), no wind stow alert Regards, Wettzell obs. ================================= r4957wn STOP ================================= 2020-07-31 18:40:23 r4957, Wettzell (wn), Stop-message Wettzell (wn) finished r4957 at scheduled time. All scans will be transferred to flexbuff. We encountered a slight power drop on site in the time range 2020.213.03.10.00 to 2020.213.03.20.00. Therefore some scans might be corrupted. System status: OK Regards, Wettzell obs. ================================ r4957wz START ================================= 2020-07-30 19:37:25 r4957, Wettzell (wz), Start-message Wettzell (wz) started r4957 at scheduled time. First source (wz): 1219+044 at 19:34:09 UT (start data). System status: OK Regards, Wettzell obs. ================================= r4957wz STOP ================================= 2020-07-31 18:39:28 r4957, Wettzell (wz), Stop-message Wettzell (wz) finished r4957 at scheduled time. All scans were transferred to flexbuff. We encountered a slight power drop on site in the time range 2020.213.03.10.00 to 2020.213.03.20.00. Therefore some scans might be corrupted. System status: OK Regards, Wettzell obs. ================================= r4957yg STOP ================================= 2020-07-31 18:39:20 Yarragadee has completed r4957 Yarragadee has completed r4957 The log and procedure files from experiment r4957 have been copied to ivs.bkg.bund.de: Formatter (H-maser) lags GPS by -355403.4312 microsec at 2020.213.18:21:43.05 Additional experiment notes: Recorded 1003.82 GB to module MED-0040 using the Mark5B+ recorder. The Module is being sent to USNO using DHL. Known problems: yes, dbbc needed to be reconfigured several times during the experiment Missed Scans: yes Observers: Lim, Warren, Earl, Jay Regards, Jay Comments from the log: Note: 0.5 second offset between mark5b and dbbc, as long as the delay is stable we may ignore the alarm. Auto corr looks bad. Warren says it might be a hardware problem. No tsys readings? 1830UT Experiment started okay (Lim). 22:30 UT steady delay offset may be OK but auto correlations are no good, dbbc bad. Power off dbbc and reconfigure. (warren) 22:47 UT complete power off / power on cycle of dbbc seems to have done the trick. first good scan 2247 (w) 23:13 UT halt agian for power cycle and reconfigure to fix two bad channels (w) 23:32 UT restart has made it worse again….(w) 00:24 UT trying a scan, clkoff still bad, autocorrelations bad (w) 01:29 UT still can't get dbbc configured, investigating (w) 02:22 UT back on schedule, dbbc powered off for some time, has cooled? recorded data good from here (w) 13:00 UT find autocorrelations are no good at start of shift, dbbc bad. No idea when it went bad in previous shift. Power off dbbc and reconfigure. still bad. Warren said to keep power cycling and reconfigure dbbc. still working on it. (Jay) 14:30 UT autocorrelations Still bad (Jay) University of Tasmania Electronic Communications Policy (December, 2014). This email is confidential, and is for the intended recipient only. Access, disclosure, copying, distribution, or reliance on any of it by anyone outside the intended recipient organisation is prohibited and may be a criminal offence. Please delete if obtained in error and email confirmation to the sender. The views expressed in this email are not necessarily the views of the University of Tasmania, unless clearly intended otherwise. ================================= r4957yg WIKI ================================= 2020-07-31 18:37:00 r4957 Yarragadee 12m Disk VSN: MED-0040 | Data volume at beginning: 0.0 GB Note: 0.5 second offset between mark5b and dbbc, as long as the delay is stable we may ignore the alarm. Auto corr looks bad. Warren says it might be a hardware problem. No tsys readings? 1830UT Experiment started okay (Lim). 22:30 UT steady delay offset may be OK but auto correlations are no good, dbbc bad. Power off dbbc and reconfigure. (warren) 22:47 UT complete power off / power on cycle of dbbc seems to have done the trick. first good scan 2247 (w) 23:13 UT halt agian for power cycle and reconfigure to fix two bad channels (w) 23:32 UT restart has made it worse again….(w) 00:24 UT trying a scan, clkoff still bad, autocorrelations bad (w) 01:29 UT still can't get dbbc configured, investigating (w) 02:22 UT back on schedule, dbbc powered off for some time, has cooled? recorded data good from here (w) 13:00 UT find autocorrelations are no good at start of shift, dbbc bad. No idea when it went bad in previous shift. Power off dbbc and reconfigure. still bad. Warren said to keep power cycling and reconfigure dbbc. still working on it. (Jay) 14:30 UT autocorrelations Still bad (Jay) 15:20 UT Tried reconfiguring dbbc several times with giving it time to cool down. clkoff values and autocorr spectra is still bad (Jay). ================================ r4957ys READY ================================= 2020-07-30 17:22:07 r4957ys, Yebes40m, Ready-message Session r4957ys ready message for Yebes40m. ------------------------------------------- First source: NARAO512 at 18:30:00 UT GPS-FMOUT: 11.337 microseconds Wx: Temperature (C): 31.05 Pressure (mBar): 910.11 Humidity (%): 22.24 Sky Conditions: Cloudy Cable difference is: longer cable makes the reading larger by 598.0 microseconds and is nominal Pointing values: SEFD X/S Source Az/El Offset1 Offset2 66/143.5 3c345 70.9/45.9 0 0 Tsys (x1/s/x2): 35.6/582/32.6 ================================ r4957ys START ================================= 2020-07-30 18:30:13 r4957ys, Yebes40m, Start-message Session r4957ys start message for Yebes40m. ------------------------------------------- Started recording with source: NRAO512 at: 18:30:00 UT ================================= r4957ys STOP ================================= 2020-07-31 18:34:02 r4957ys, Yebes40m, Stop-message Session r4957ys stop message for Yebes40m. ------------------------------------------ Problem scans: Source Scan start Explanation of problem 0 0 0 Disk Inventory: A 0, B 0, C 1, D 2, E 0, F 0, G 3, H 0, (other larger) 0 Observation finished at: 18:29:28 UT ================================================================================