VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BJ049C Observer: Jackson, N. Project type: VLBA Obs filename: bj049ccrd.* Date/Day: 2004JAN29/029 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Cyrus M Reed. VCLOCK and GPS DELTA OK. UT1-UTC OK (-0.41). WEA: Cloud cover via webcam: WEA: SC Cloudy. (45%) HN Clear skies. WEA: Other sites unknown (night). WEA: Rain/snow @ MK - other sites dry. 1210 Begin observing. Antennas on source. 1210-1223 *NL not observing due to "AZ1 Low lubrication AMECH 100 13 pressure" flag. Waiting for site tech to check antenna and OK for use. 1302-1312 %KP Communications down. 1400 Readbacks this past hour ok at all sites except: PT bad readback drive 1 track 4 at 1329 and 1344 UT 1425 New operator: T. Perreault 1433 HN wea: broken low clouds, up to 3" of snow on 20% of the dish 1448 KP wea: clear, no precipitation 1459 LA wea: clear, no precipitation 1500 Readbacks this past hour ok at all sites 1501 FD bad readback drive 2 tracks 2,4; all other sites ok 1504 Readback check ok 1509 End. Downtime Summary: Total downtime : 13 min Percentage downtime of observing: 0.7% Average downtime per hour : 0.4 min Total scheduled observing time (# Antennas): 1790 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.