VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BW067P Observer: Walker. R.C. Project type: VLBA Obs filename: bw067pcrd.* Date/Day: 2003DEC27/361 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= 2347 Begin file. MK joins later. VCLOCK check ok. MK at -0.506 (ping 1.294 seconds) UT1-UTC check ok GPS delta < 10 us Operator: T. Perreault 2347-1048 %KP high system temperatures on channels 1 & 2 INT 50 330 Known RFI. 2353 Readback check ok 0000 Date is 2003DEC28/362. 0012 NL wea: raining 0029 BR wea: snowing 0100 LA site tech Paul Johnson called, wanted to know when BU076P ran and how much tape it used. 0105 Readback check ok 0140 OV site tech Bill Robbins called, wanted to know tape situation. Told him that this project will fit on the current tape. 0158 MK site tech Bill Hancock called to inform of possible bad weather at the site. There is a cold front moving through and a lot of moisture building up - could lead to icing conditions. 0219 Readback check ok 0235 New operator is D. Pierce. 0320 MK site tech Bill Hancock called with a weather update. Precipitation has arrived, with dangerous cold front ~10HRS out. 0328 MK File begins. MK WEA: Light rain. 0328-1010 *MK RFI on channels 1 and 2. INT 20 80 0332 *OV Bad readback on track 20, drive #2. All other site readbacks are okay. 0400-0600 *NL Known RFI being taken, mostly on CH 1 and 2. INT 50 60 0441-0445 *BR Snow dump; 2.4in. WEA 100 4 0446 Readbacks are okay. 0555 Readbacks are okay. 0600 Readbacks are okay. 0653-0655 *SC Autostowed. Power bump. Repointed. COM 100 2 0710 *PT Bad readback on track 4, drive #1. Other site readbacks are okay. 0715 Readbacks are okay. 0736-0737 *SC Autostowed. Power bump. Repointed. COM 100 1 0829 Readbacks are okay. 0830-0833 *HN Antenna was unwinding, did not acquire ACU 100 3 source during this time. 0834 Readbacks are okay. 0953 Readbacks are okay. 1001 %SC Precipitation started. 1015 Readbacks are okay. 1042 MK File ends. 1043 *OV Bad readback on track 29, drive #2. Other site readbacks are okay. 1048 End. Downtime Summary: Total downtime : 480 min Percentage downtime of observing: 7.3% Average downtime per hour : 4.4 min Total scheduled observing time (# Antennas): 6610 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.