VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BK113D Observer: Kemball,A. Project type: VLBI Obs filename: bk113dcrd.* Date/Day: 2005JAN19/019 Ants Scheduled: HN NL FD LA PT KP OV BR MK Y =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Brian Willard. GPS delta less than 10 microseconds all sites. UT1-UTC = -0.52 at all sites. Vclock values nominal. LA writing MkV, VSN NRAO-011, Bank B. WEA: snow on dish BR. WEA: scattered clouds HN,NL,LA,PT,OV,VLA. WEA: clear FD. WEA: very cold temperatures HN. WEA: overcast BR. WEA: occasional high wind gusts MK,KP,NL. WEA: clouds MK, extent unknown. 0628 Begin, BR,FD,KP,LA,MK,NL,OV,PT on source. 0630 VLA on source. 0629-1231 *FD: high Tsys at 3mm, cause is unknown. FE 50 181 0647 *KP: bad readbacks tracks 7 and 9, drive 1. All other readbacks OK. 0651 Operator is Sonja Mendoza. 0715 HN joins project BK113D as scheduled. 0725 *MK WEA: wind gust > 35mph 0752 Readback checks okay at all sites. 0801 Readback checks okay at all sites. 0818 Readback checks okay at all sites. 0917 *MK WEA: wind gust > 35mph 0922 Readback checks okay at all sites. 0931 Readback checks okay at all sites. 0959 Readback checks okay at all sites. 1052 Readback checks okay at all sites. 1101 *NL: bad readbacks tracks 26, 28, drive 1. All other readbacks okay. 1129 Readback checks okay at all sites. 1222 *PT: Bad readback tracks 14,16,18,20 drive 2. All other readbacks okay. 1226 SC WEA: Light scattered clouds, no precipitation. 1231 End. Downtime Summary: Total downtime : 181 min Percentage downtime of observing: 5.0% Average downtime per hour : 3.0 min Total scheduled observing time (# Antennas): 3630 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.