VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: MT506 Observer: Analysts, Data Project type: TEST Obs filename: mt506crd.* Date/Day: 2005FEB10/041 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Sonja Mendoza. Vclock, GPS Delta, UTC-UT1 time check all okay. LA writing on MarkV disk pack NRAO-024, bank B. WEA: HN Snowing. KP, PT Light rain. WEA: FD,LA overcast skies. WEA: MK,NL clear skies. WEA: BR,SC,OV partly cloudy skies. 2148 Begin observation. 2152-2155 *PT Antenna not in point, perhaps due to power COM 100 3 glitch. Repointed. 2152 %PT WEA: precipitation starting. 2155 Readback check ok. 2156-2158 *PT Antenna not in point, perhaps due to power COM 100 2 glitch. Repointed. 2202-2204 *HN Non-critical power reset, antenna repointed. COM 100 2 2204-2210 *PT Antenna not in point, circuit breaker faults. COM 100 6 Site tech reports bad weather probably cause. 2204-2212 *HN FRM will not set up at 13cm following power FRM 100 8 reset at site. 2211 Readback check ok. 2212-2318 *PT Antenna not in point, due to power glitches. COM 100 66 Will point when power situation improves. 2219-2318 *SC Subreflector does not go to commanded position. 15359 10 5 Problem is intermittant. 2227 Readback check ok. 2239 New operator is Paul Dyer. 2243 All readbacks ok. 2308 all readbacks ok. 2318 End. Downtime Summary: Total downtime : 92 min Percentage downtime of observing: 10.2% Average downtime per hour : 6.1 min Total scheduled observing time (# Antennas): 900 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.