VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BV057 Observer: M. Vigotti Project type: VLBA Obs filename: bv057crd.* Date/Day: 2005JAN23/023 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Jim Ogle. VCLOCK and gps delta checks okay. LA recording on Mk5 disc pack NRAO-026 in bank A. *Snowing at HN. 1100 Begin at all sites except MK, which starts later. 1123 Readbacks okay. 1124 Begin at MK. 1148 *SC bad readbacks on track 25, drive #1. Other sites okay. 1244-1247 *SC rotation position error. 15359 100 3 1300-1302 *Dumping snow at HN, antenna off source. WEA 100 2 1300-1301 *SC rotation position error. 15359 100 1 1300 Readbacks okay. 1337-1338 *HN rotation position error. FRM 100 1 1343 LA now writing to Mk5 disc pack NRAO-039 in bank B. 1410 Readbacks okay. 1411-1413 *SC rotation position error. 15359 100 2 1438 New operator is Paul Dyer. 1443-1451 *SC Rotation position error. 15359 100 8 1508-1511 *HN Dumping snow. Antenna off source. WEA 100 3 1543 All readbacks ok. 1631-1643 *SC Rotation position error. 15359 100 12 1642-1729 *PT Ran out of tape. OTHER 100 47 Tech's car broke down in route, but on his way now. 1654 All readbacks ok. 1751-1756 *HN Ran out of tape. Tech is inroute. HUERR 100 5 1805 All readbacks ok. 1806-1814 *SC Rotation position error. 15359 100 8 1820-1824 *SC Rotation position error. 15359 100 4 1908-1912 *SC Rotation position error. 15359 100 4 1915-1918 *SC Rotation position error. 15359 100 3 1949 SC End of file. 1956 End. Downtime Summary: Total downtime : 103 min Percentage downtime of observing: 1.9% Average downtime per hour : 1.2 min Total scheduled observing time (# Antennas): 5360 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.