VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BL137R Observer: Lister, M. Project type: VLBA Obs filename: bl137rcrd.* Date/Day: 2007JAN06/006 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operators are Paul Padilla and Jim Ogle GPS delta < 10 us (NL at 8.2) UT1-UTC correct (0.04) VClock ok (SC at -0.124) 0011 Begin 0011-0334 *FD out to calibration after axle work 19601 100 203 0011 %HN Dew Point > Temp. by ~1 degree. Pointing WEAST Equation may be affected. 0011-0128 *PT snowing, removed from observation due to WEA 100 77 excessively high Tsys. 0011-0018 *BR AZ#2 circuit breaker fault. ACU 100 7 0012-0014 *KP rotation drive fault FRM 100 2 0128 Starting up at PT, checking to see if system temperatures have improved any. 0130 New operators are Betty Ragan and Jim Ogle. 0214-1425 *PT system temperatures very bad again, probably due WEA 100 731 to weather. Taking it out of observing again. 0239-0241 *SC autostowed, commercial power glitch. Repointed. COM 100 2 0252-0253 *OV AZ#1 armature overcurrent fault. ACU 100 1 0411 %OV High wind gusts. 0420 %BR High wind gusts. 0528 %HN Raining. 0554 %LA Snowing. 0645 Operator is Anthony Sowinski. 0836 *BR Raining. 0936 *MK Raining. 1105-1106 %LA Mark5 communications lost glitch. 1352 *SC Raining. 1425 PT returned to observation. Tsys reasonable. 1431 New operator: T. Perreault 1730-2230 %PT elevated system temperatures possibly due to water in the feed. TSMPLOTs show elevated system temperatures that somewhat correspond to position in ELEVATION. 2107-2111 *HN autostowed. Power glitch. Repointed. COM 100 4 0000 Date is 2007JAN07/007. 0010 End. Downtime Summary: Total downtime : 1027 min Percentage downtime of observing: 7.1% Average downtime per hour : 4.3 min Total scheduled observing time (# Antennas): 14390 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.