==================================== r4857 ===================================== Ft : Observed with warm receiver but scheduled as warm. Ht : Auto-correlation plots suggest BBC06 was not working correctly. Ke : DBBC reconfigured missing few scans (18:47-18:50) (08:52-09:10). Kk : Late start cooling down receiver (19:30-20:40). Ny : Receiver warmed up during session. Many on-off sources probably due to wind (15m/s - 20m/s). No problems found for : Wn, Ww, Wz, Yg, Ys ================================ r4857ft READY ================================= 2018-08-30 17:27:19 R4857, Fortaleza, Ready-message Session R4857 ready-message for Fortaleza. ------------------------------------------- Comments: Receiver is warm. We are with problems in receiver box temperature control system. The receiver box is working open. First source: 1255-316 at 242 - 18:36:52 UT. FMOUT-GPS: 0.950 microseconds. Sky Conditions: Clear. Cable difference is: longer cable makes the reading larger by 104.1 microseconds and is nominal. Pointing values: SEFD (X/S) Source Az/El Offset1 Offset2 / Taurus-A 297/28 0.011 -0.015 / Orion-A 266/33 0.006 -0.003 -- FORTALEZA VLBI TEAM. ================================ r4857ft START ================================= 2018-08-30 18:38:05 R4857, Fortaleza, Start-message Session R4857 start message for Fortaleza. -------------------------------------------- Started recording with source: 1255-316 at 242 - 18:36:52 UT as scheduled. -- FORTALEZA VLBI TEAM. ================================= r4857ft STOP ================================= 2018-08-31 18:36:21 R4857, Fortaleza, Stop-message Fortaleza finished R4857 session at 243 - 18:29:03 UT. Comments: All scans recorded. Receiver is warm. Data will be uploaded by e-transfer to WACO. Disk Inventory Size D/2000GB = 03 Size G/4000GB = 02 Size J/8000GB = 09 Other Size (1000GB) = 01 Last update: AUG/2018. Renato Abreu. Fortaleza VLBA Team ================================ r4857ht READY ================================= 2018-08-30 13:20:57 r4857, Hart15M, Ready-message Session r4857 ready message for Hart15M. ---------------------------------------- Comments: Hart15M is ready to start r4857. All systems nominal. First source: 2144+092 at 18:30:00 UT FMOUT-GPS: 14.229 microseconds Wx: Temperature (C): 22.7 Pressure (mBar): 867.3 Humidity (%): 26.8 Sky Conditions: Clear skies Cable difference is: na Pointing values: na Tsys (x1/s/x2): 35.6/44.3/41.8 ================================ r4857ht START ================================= 2018-08-30 18:30:00 r4857, Hart15M, Autostart-message Session r4857 auto-start message for Hart15M. --------------------------------------------- Started recording with source: 2144+092 at 242.18:30:00 UT ================================= r4857ht STOP ================================= 2018-08-31 18:45:54 r4857, Hart15M, Stop-message Session r4857 stop message for Hart15M. --------------------------------------- Comments: Hart15M has completed R4857. All scans recorded but BBC06 auto-correlation plots suggest this channel was not working correctly. Weather was clear for the first part with some thin cloud from the middle to the end. Data will be e-shipped to Washington. Disk Inventory: A 0, B 1, C 0, D 0, E 0, F 0, G 2, H 0, (other larger) 5 Observation finished at: 18:29:32 UT ================================= r4857ke WIKI ================================= 2018-08-31 09:17:00 r4857 Katherine 12m Disk VSN: UVLBI-29/2000 | Data volume at beginning: 0.000 GB 1830UT Experiment started OK (mas). At 18:47 UT, need to reconfigure DBBC due to consistent “Alarm: Large difference between formatter and maser delays” (mas) Missed scans from 242-1847 till 242-1849b (mas) 08:53 UT DBBC drifting and not stabilising so had to reconfigure. (Katie) After 2 reconfigures and 1 reboot, dbbc is stable again (for now). (Katie) Missed/affected Scans: 243-0852 until 243-0906a. (katie) ================================ r4857kk READY ================================= 2018-08-30 20:43:11 r4857, Kokee Park, Ready-message Session r4857 ready message for Kokee Park. ------------------------------------------- Comments: Starting experiment after recool. Still cooling down. Current temperatures- 15k: 69.86 50k: 161.21 First source: 0340+362 at 242/2043:55 UT FMOUT-GPS: +6.638 microseconds Wx: Temperature (C): 18 Pressure (mBar): 889 Humidity (%): 84.5 Sky Conditions: mostly cloudy Cable difference is: longer cable makes the reading smaller by 51.5 microseconds and is nominal Pointing values: SEFD X/S Source Az/El Offset1 Offset2 2422/843 taurusa 279/49 0.004 0.022 Tsys (x1/s/x2): 108/42/63 ================================ r4857kk START ================================= 2018-08-30 20:43:55 r4857, Kokee Park, Autostart-message Session r4857 auto-start message for Kokee Park. ------------------------------------------------ Started recording with source: 0340+362 at 242.20:43:55 UT ================================= r4857kk STOP ================================= 2018-08-31 18:31:35 r4857, Kokee Park, Stop-message Session r4857 stop message for Kokee Park. ------------------------------------------ Comments: Started experiment late due to recooling system. Current temperatures; 15k: 12.21 50k: 85.00 Data on diskpack BKG-0037 to be sent out via FedEx AWB#7731 1009 8707 Disk Inventory: A 0, B 0, C 0, D 8, E 6, F 0, G 0, H 0, (other larger) 1 Observation finished at: 243/1829:03 UT ================================ r4857sv OTHER ================================= 2018-08-30 10:14:59 Svetloe. I18242, R4857. Dear colleague! Svetloe will not participate in the experiments I18242, R4857 in connection with the repair work on the antenna. -- Best regards, operator vlbi(Svetloe). mailto: oper.sv@iaaras.ru ================================ r4857wn START ================================= 2018-08-30 18:20:49 r4857wn - start Wettzell started r4857wn at 242/18:30ut systemstatus - ok. weather: cloudy, calm. regards, wz-obs. ================================= r4857wn STOP ================================= 2018-08-31 18:32:42 r4857wn - end Wettzell finished r4857wn at 243/18:29:32ut all scans recorded. regards, wz-obs. ================================ r4857wz START ================================= 2018-08-30 19:42:11 r4857wz - start Wettzell started r4857wz at 242/19:36:14ut komments: first source lost start the observation with source 1656-075 at 242/19:36:14ut systemstatus - ok. weather: cloudy, calm. regards, wz-obs. ================================= r4857wz STOP ================================= 2018-08-31 18:33:26 r4857wz - end Wettzell finished r4857wz at 243/18:28:20ut all scans recorded. regards, wz-obs. ================================= r4857yg WIKI ================================= 2018-08-31 09:17:00 r4857 Yarragadee 12m Disk VSN: SHAO-023/2000| Data volume at beginning: 0.000 GB 1830UT Experiment started OK (mas). ================================ r4857ys READY ================================= 2018-08-30 18:07:26 r4857, Yebes40m, Ready-message Session r4857 ready message for Yebes40m. ----------------------------------------- First source: 2144+092 at 18:30:00 UT GPS-FMOUT: 1.2591 microseconds Wx: Temperature (C): 28.10 Pressure (mBar): 913.80 Humidity (%): 28 Sky Conditions: Some clouds Cable difference is: longer cable makes the reading larger by 692.7 microseconds and is nominal Pointing values: SEFD X/S Source Az/El Offset1 Offset2 237/1026 3c274 252.8/37.2 0 0 Tsys (x1/s/x2): 59.6/394/53.5 ================================ r4857ys START ================================= 2018-08-30 18:33:09 r4857, Yebes40m, Start-message Session r4857 start message for Yebes40m. ----------------------------------------- Started recording with source: 2144+092 at: 18:30:00 UT ================================= r4857ys STOP ================================= 2018-08-31 18:28:46 r4857, Yebes40m, Stop-message Session r4857 stop message for Yebes40m. ---------------------------------------- Comments: no known problems 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) 2 Observation finished at: 18:27:52 UT ================================================================================