VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: GB053 Observer: N. Bartel Project type: VLBI Obs filename: gb053crd.* Date/Day: 2005FEB25/056 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK Y GB EB =UT-Time===Comment===============================================MF#===%AD==AMD= LA writing to Mk5 disc pack NRAO-062 on bank A. VCLOCK and gps delta checks okay. 0008 Begin at SC, HN and EB. 0012 %HN: bad readback track 32, drive 1. Others OK. 0018 New Operator is Brian Willard. 0036 %HN: bad readback track 32, drive 1. All other readbacks at SC and HN are OK. 0045 WEA: overcast NL,FD,LA,PT. 0045 WEA: broken clouds KP,OV. 0045 WEA: clear BR,MK. 0045 WEA: occasional high wind gusts SC. 0045 WEA: snow HN,PT. 0045 WEA: rain KP. 0100 Readbacks good at SC,HN. 0123 Start at GB. 0231 Begin at NL. 0317 %HN: bad readback track 32, drive 1. All toher readbacks good at HN,SC,NL. 0318 Begin at FD,KP,LA,PT,VLA. 0322 KP: high Tsys due to low elevation. 0403 Begin at OV,BR. 0449 Readbacks good at SC,HN,NL,FD,PT,OV,BR. 0514 Readbacks good at SC,HN,NL,FD,PT,OV, 0538 Readbacks good at SC,HN,NL,FD,PT,OV. 0552-0615 *SC: not recording: rec2 vac fail. 15760 100 23 0602 Begin at MK. 0605 All readbacks good at MK. 0646 Operator is Sonja Mendoza 0700 Readbacks good at SC,HN,NL,FD,PT,OV,MK,Y 0708 SC WEA: overcast, low clouds, wet. 0822 %Y Bad readback on every single track, drive 1. 15761 Readbacks good at HN,NL,FD,PT,OV,MK. 0828 %NOTE!! No readbacks recorded for KP for entire obs so far. The MarkV unit appears to have been left in an active state; this could affect correlation! Putting KP MarkV into stmode right now. Doing the same for all stations with MarkV except LA, to be on safe side. 0909 %Y Bad readback on every single track, drive 1. 15761 Readbacks good at HN,NL,FD,PT,OV,MK. 0912-0917 *SC Antenna not in point mode, probably due to a COM 100 5 power glitch. Antenna repointed. 0950 %Y Bad readbacks, tracks 2,4 and tracks 15-33, 15761 drive 2. Readbacks good at SC,HN,NL,FD,PT,KP,OV,BR,MK 1142 HN,SC end observation as scheduled. 1142 Readbacks good at NL,FD,PT,OV,BR,MK 1249 FD WEA: overcast skies, light rain. 1358 SC WEA: overcast skies, low clouds, no precipitaion. 1358 NL leaves observation as scheduled. 1359 %Y Bad readback on every single track except track 15761 2, drive 2. Readbacks good at FD,PT,KP,OV,BR,MK,Y 1423 Readbacks good for all sites (except those no longer observing). 1442 New operator is Paul Dyer. 1444-1446 *KP Ran out of tape. Must have had a short tape. TAPE 100 2 1444 KP Site tech report clear skies, dish is covered with frost. 1446 End of file at FD,LA,PT,and KP. 1511 All readbacks ok. 1529-1534 *BR Ran out of tape. TAPE 100 5 1534 End. Downtime Summary: Total downtime : 35 min Percentage downtime of observing: 0.3% Average downtime per hour : 0.2 min Total scheduled observing time (# Antennas): 10186 min (11) 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.