VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BC120EE Observer: Chatterjee, S. Project type: VLBA Obs filename: bc120eecrd.* Date/Day: 2004APR23/114 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= 1134 Begin file VCLOCK check ok. SC at -0.120 UT1-UTC check ok GPS delta < 10 us Operator: T. Perreault 1134 HN wea: raining 1135-1142 *PT tape on recorder 1 is not moving. Brought up OTHER 100 7 tape motion screen, there doesn't appear to be anything wrong - there appears to be vacuum. Did a reboot of the station VME computer which corrected the problem. Data recording started at 11:41:05 UT. 1212 SC wea: low scattered, high broken clouds; no precipitation 1241-1302 *FD ran out of tape on recorder 1, no tape loaded HUERR 100 21 on recorder 2. Site techs should be on site soon. 1245 HN wea: low overcast, moderate rain 1253 FD site tech is going to mount a tape that has not been prepassed. Tape is EVNT0292. 1336 End. Downtime Summary: Total downtime : 28 min Percentage downtime of observing: 2.3% Average downtime per hour : 1.4 min Total scheduled observing time (# Antennas): 1220 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.