VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BG145C Observer: Greenhill, L. Project type: VLBA Obs filename: bg145ccrd.* Date/Day: 2004FEB28/059 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= 0318 Begin file VCLOCK check ok. SC at -0.148 UT1-UTC check ok GPS delta < 10 us Operator: T. Perreault 0318-0700 *MK not observing. Wind speeds at site are WEA 100 222 sustained over 55 mph. Antenna removed from observing. Will monitor weather and put antenna into observing if/when possible. Weather conditions are supposed to get worse with rain/snow. 0325 Readback check ok 0344 Readback check ok 0403 *PT wea: raining, seeing elevated system temperatures. 0408 Readback check ok 0414 Readback check ok 0434 Readback check ok 0458 Readback check ok 0505 Readback check ok 0524 Readback check ok 0548 *LA bad readback drive 1 track 31; all other sites ok 0555 Readback check ok 0614 Readback check ok 0638 Readback check ok 0645 Readback check ok 0646 New operator is Jim Ogle. 0654 *Freezing rain falling at MK. Winds appear to have died down to below 25 mph so I will start up the observing and monitor conditions. 0700 Beginning observation at MK. 0703 Readbacks okay. 0734 Readbacks okay. 0753 Readbacks okay. 0817 Readbacks okay. 0825 Readbacks okay. 0828-0829 *MK autostowed, high wind gust. Repointed. WEA 100 1 0837 *MK winds are picking up again and commercial power also appears glitchy, there have been a couple of UPS inverter and high motor current flags. Will need to shut down again if conditions continue to worsen. 0845 Readbacks okay. 0909 Readbacks okay. 0917 Readbacks okay. 0922-1507 *MK EL motor currents running too high fighting the WEA 100 345 winds, especially with ice likely forming on the dish. Taking it back out of the observation for its own safety. 0937 Readbacks okay. 1001 Readbacks okay. 1009 Readbacks okay. 1029 Readbacks okay. 1053 Readbacks okay. 1102 Readbacks okay. 1121 Readbacks okay. 1145 Readbacks okay. 1152 Readbacks okay. 1211 Readbacks okay. 1235 Readbacks okay. 1242 Readbacks okay. 1301 Readbacks okay. 1309 Readbacks okay. 1325 Readbacks okay. 1332 End at SC. 1333 Readbacks okay. 1351 Readbacks okay. 1415 Readbacks okay. 1422 Readbacks okay. 1426 *Snowing at LA. 1436 New operator is Paul Dyer. 1440 %FD Bad readbacks on drive 1, tracks 26 and 28. All other site were ok. 1500 Readbacks at all sites were ok. 1507 End. Downtime Summary: Total downtime : 568 min Percentage downtime of observing: 8.0% Average downtime per hour : 4.8 min Total scheduled observing time (# Antennas): 7090 min (10) Notes: * = Entries where data was affected. % = Entries where data may have been affected. & = Entries where the site tech was called out. WEA = Weather entries. MF# = Maintenance form or major downtime category associated with a problem. %AD = The percentage of an antenna affected by a problem. AMD = Total antenna-minutes downtime for a problem. Tsys = System Temperature (TP/SP x Tcal/2) ACU = Antenna Control Unit FRM = Focus/Rotation Mount RFI = Radio Frequency Interference VME = Site control computer CB = Circuit Breaker vclock = Program that compares site clock time to a standard.