VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BC120BV Observer: S. Chatterjee Project type: VLBA Obs filename: bc120bvcrd.* Date/Day: 2003SEP20/263 Ants Used: 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. 1216 Begin. 1216-1433 *BR Antenna is unuseable due to failed AZ idler 12421 100 137 wheel bearing. 1225 &SC Called tech regarding high ped room temps. His 12421 wife said he is at the store and will be back shortly. He will call in then. 1234 &SC Tech is on his way to the site. 12421 1320 SC Tech on site. Ped room is cooling quickly. 12421 1349 New operator is Jim Ogle. 1216-1433 %OV maser IF amplitude voltage out of range. Don't 12466 100 137 know if this will affect the maser's timing or not. 1354 &OV tech called out to investigate maser problem. 12466 1433 End. Downtime Summary: Total downtime : 274 min Percentage downtime of observing: 20.0% Average downtime per hour : 12.0 min Total scheduled observing time (# Antennas): 1370 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.