VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BI030C Observer: H. Imai Project type: VLBA Obs filename: bi030ccrd.* Date/Day: 2005FEB04/035 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Paul Dyer. VCLOCK, GPS Delta, and UT1-UTC check ok. LA is writing Mark V disc pack NRAO-037 in bank A. 1213 Begin at all sites. 1213-2211 *MK Revoved from observing. To much snow and ice WEA 100 598 in the dish, high motor currents. 1236 All readbacks ok. 1300 All readbacks ok. 1324 All readbacks ok. 1342 *HN WEA: Site tech reports low clouds, snow in the dish. 1409 All readbacks ok. 1420 New operator is Brian Willard. 1454 WEA: clear dry BR. 1456 WEA: overcast dry KP. 1455 All readbacks ok. 1511 Operator is Sonja Mendoza. 1515-1830 %HN Intermittant high tsys (but doesn't look like RFI). Cause unknown; tsys sometimes twice what is us 1628 All readbacks ok. 1713 All readbacks ok. 1759 All readbacks ok. 1907 All readbacks ok. 1953 All readbacks ok. 2002 SC only readback ok. 2030 HN only readback ok. 2037-2044 *KP Antenna not in point mode, reason is COM 100 7 unknown, perhaps a momemntary power glitch. Repointed. 2039 All readbacks ok. 2103 All readbacks ok. 2104-2115 *SC Antenna not in point mode, probably due to a COM 100 11 power glitch. Repointed. 2127 All readbacks ok. 2211 End. Downtime Summary: Total downtime : 616 min Percentage downtime of observing: 10.3% Average downtime per hour : 6.2 min Total scheduled observing time (# Antennas): 5980 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.