VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: MT503 Observer: Analysts, Data Project type: TEST Obs filename: mt503crd.* Date/Day: 2005JAN18/018 Ants Scheduled: SC HN NL FD LA PT KP OV BR =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Sonja Mendoza. LA using Mark5 disk NRAO-011. PT using Mark5 disk NRAO-009. KP using Mark5 disk NRAO-061. Vclock, GPS delta and UT1-UTC time checks all okay. 0920 Begin observation. 0920-1051 *MK Site not included due to unavailability of an OTHER 100 91 onsite tech. 0920-0928 *NL AZ brake fault; a known problem during cold ACU 100 8 weather. Was able to finally clear the problem and point the antenna. 0920 WEA: Very cold temps at NL(-15C),HN(-17C). No precipitation at any sites. Winds light at all sites. 0928 Readback check okay at all sites. 0944 Readback check okay at all sites. 1000 Bad readback at OV, track 16, drive 2. All other sites okay. 1016 Readback check okay at all sites. 1025 Readback check okay at all sites. 1041 Readback check okay at all sites. 1051 End. Downtime Summary: Total downtime : 99 min Percentage downtime of observing: 12.1% Average downtime per hour : 7.3 min Total scheduled observing time (# Antennas): 819 min (9) 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.