VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BB240Q Observer: Bower, G. Project type: VLBA Obs filename: bb240qcrd.* Date/Day: 2008FEB07/038 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK GB =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Heidi Gerhardt GPS delta, UT1-UTC (-0.31), vclock ok WEA: MK isolated showers, BR chance rain/snow, HN snowing, NL chance snow, SC chance rain 1130 Begin 1130-1839 *HN out due to thick snow and ice on dish which 22193 100 429 caused FRM rotation to freeze in place. 1233-1930 *MK out due to several feet of snow causing high WEA 100 417 motor currents when moved. 1141 *FD 35+ mph wind caution ACU 1321-1324 %PT sampler 2 clock dropout, data switch module #1 FMTR error. 1442 New operator: T. Perreault 1526 BR wea: site tech reports some rain/freezing rain overnight, dish is clear of snow but has some ice in it. 1527 KP wea: clear, no precipitation 1609 OV wea: clear, no precipitation 1737 New operator is Jim Ogle. 1848 End at SC. 1905 End at GB. 1930 End. Downtime Summary: Total downtime : 846 min Percentage downtime of observing: 17.6% Average downtime per hour : 10.6 min Total scheduled observing time (# Antennas): 4800 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.