VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BS142A Observer: Sarma, A. Project type: VLBA Obs filename: bs142acrd.* Date/Day: 2005DEC11/345 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Sonja Mendoza. HN writing on Mk5 disk NRAO-036, bank B. FD writing on Mk5 disk NRAO-089, bank B. LA writing on Mk5 disk NRAO-033, bank B. PT writing on Mk5 disk NRAO-123, bank A. KP writing on Mk5 disk NRAO-015, bank B. MK writing on Mk5 disk NRAO-067, bank B. SC,NL,OV,BR writing on tape. Vclock, GPS delta and UT1-UTC time checks all ok. NL,FD,PT,BR WEA: Overcast skies. NL has some snow in dish, 10-20% covered. LA,KP,OV WEA: Partly cloudy, high to middle altitude clouds. MK WEA: Clear skies, breezy. 2234 Begin project. MK starts 10 min later. 2234-1031 *BR: not fringing, data not usable. 17390 100 717 2244 HN writing on Mk5 disk NRAO-126, bank A. 2322 PT writing on Mk5 disk NRAO-059, bank B. 2255 Readbacks ok. 2356-0002 %KP Communications down; Site computer may have a problem; investigating. 0000 Date is 2005DEC12/346. 0008 Readbacks ok. 0031 Readbacks ok. 0121 %MK WEA: wind gusts > 35 mph. 0158 Readbacks ok. 0242 New operator is Brian Willard. 0415 Readbacks ok. 0438 Readbacks ok. 0450 Readbacks ok. 0555 %MK: high winds. 0618 Readbacks ok. 0641 Readbacks ok. 0718-0750 *HN: not recording due to comm/VME error. COMM 100 32 0821 Readbacks ok. 0857 %OV: bad readbacks nearly all tracks drive 1. All other readbacks ok. 0904 %NL: fresh snow. 1010 All readbacks ok all tape sites. 1019 %BR: snowing. 1021 End SC. 1031 End. Downtime Summary: Total downtime : 749 min Percentage downtime of observing: 10.4% Average downtime per hour : 6.3 min Total scheduled observing time (# Antennas): 7170 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.