VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BW072E Observer: K. Wiik Project type: VLBA Obs filename: bw072ecrd.* Date/Day: 2004AUG29/242 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, UT1-UTC check ok. 1140 Begin at all stations except SC and BR, which start later. 1140-2040 *NL 3mm receiver has been removed for maint. 14286 20 108 1140-2040 *FD 3mm receiver has been removed for maint. 14385 20 108 1145 Begin at SC and BR. 1145-1431 *SC FRM rotation will not lock. Position error 14627 50 83 is usually ~ 0.5-3 degrees. 1158 All readbacks ok. 1234 %LA Bad readback on drive 2, track 15. All others were ok. 1339-1349 *FD FRM focus brake fault. FRM 100 10 1415 All readbacks ok. 1435 All readbacks ok. 1511 %SC Bad readback on drive 2, track 33. All others ok. 1555-1557 *FD Autostowed. Power glitch. COM 100 2 1559 All readbacks ok. on duty Operator: Peggy Perley Weather: LA,PT,KP,OV,MK clear and dry SC,NL,FD -scattered cumulus clouds < 20% sky cover HN,BR high, thin clouds >80% 1707-1710 PT not in point mode due to power bump COM 100 3 1820-1910 *SC problems with locking in subreflector rotation 14628 100 50 1953-1957 *PT not in point mode due to power bump COM 100 4 2040 End. Downtime Summary: Total downtime : 368 min Percentage downtime of observing: 6.8% Average downtime per hour : 4.1 min Total scheduled observing time (# Antennas): 5400 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.