VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BJ050 Observer: C.J. Jin Project type: VLBA Obs filename: bj050crd.* Date/Day: 2005APR14/104 Ants Scheduled: 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-050 in bank B. PT is writing Mark V disc pack NRAO-017 in bank B. KP is writing Mark V disc pack NRAO-051 in bank B. 0841 Begin at NL,FD,LA,PT, and KP. 0841 MK is flagging an ACU fault. This is due to the antenna anemometers being disconnected. 15933 Data is not affected. 0841 *FD Drive 1 has been showing bad readbacks 15910 on tracks 4,5, and 6. 0842 Begin at OV and BR. 0900 All readbacks so far are ok. 0942 MK Begin. 0947 %MK Bad readbacks on drive 2, tracks 18, 23, and 30. 1100 All readbacks since last report were ok. 1200 All readbacks in the last hour were ok. 1228-1230 *PT Autostowed. Power glitch. COM 100 2 1300 All readbacks in the last hour were ok. 1340 New operator is Brian Willard. 1340 Readbacks good all sites. 1349 WEA: scattered clouds LA. 1408 WEA: scattered clouds BR. 1411 Readbacks good all sites. 1426 %MK: bad readback track 20, drive 1. All other readbacks OK. 1427 Readbacks good all sites. 1442 Readbacks good FD,OV,BR,MK. 1442 End observing NL. 1459 Readbacks OK. 1501 WEA: clear KP,OV. 1514 Readbacks OK. 1525-1528 *KP: autostowed, repointed. COMM 100 3 1531 Readbacks good. 1555 End. Downtime Summary: Total downtime : 5 min Percentage downtime of observing: 0.1% Average downtime per hour : 0.1 min Total scheduled observing time (# Antennas): 3472 min (8) 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.