VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BD101C Observer: S. Dougherty Project type: VLBA Obs filename: bd101ccrd.* Date/Day: 2005JAN17/017 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK Y =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Paul Dyer. VCLOCK, GPS Delta, and UT1-UTC check ok. 1400 Begin. 1400-0154 *MK Not observing. Site is inaccessable due to WEA 100 714 snow. No tape available. 1400 *BR WEA: Snowing. 1400 LA is writing Mark V disc pack NRAO-047 in bank A. PT is writing Mark V disc pack NRAO-009 in bank B. KP is writing Mark V disc pack NRAO-028 in bank A. 1427 All readbacks ok. 1434 New operator: T. Perreault 1458 Readback check ok 1529 Readback check ok 1547 LA recording Mark 5 bank B pack NRAO-011 KP recording Mark 5 band B pack NRAO-061 1559 Readback check ok 1629 Readback check ok 1658-1733 *SC subreflector not reaching position in 15359 100 35 ROTATION at 4cm. Stalling out roughly 1.5 counts off in position. Have done MASTER CLEAR resets and reloading of current observation scan to no effect. 1700 Readback check ok 1730 Readback check ok 1800 Readback check ok 1807 OV wea: cloudy, no precipitation 1831 Readback check ok 1901 Readback check ok 1925-2025 *BR ran out of tape. HUERR 100 60 Called oncall site tech at home, no answer. Called cell phone, left voicemail message. Hopefully he is enroute to the site. Suspended observing until new tape is mounted. 1931 *NL bad readback drive 2 tracks 3,5; all other sites ok 2002 Readback check ok 2004 BR site tech called, enroute to the site. Road is ice covered so it is taking him longer to get there. 2021 BR wea: low overcast, light freezing rain 2029 BR site tech called, said that a snow dump probably would not result in much of anything coming out of the dish. System temperatures look ok at 4cm. 2032 Readback check ok 2053 BR system temperatures look ok at 2cm. 2102 *Y bad readback drive 2 tracks 7,9,27; all other sites ok 2106 BR system temperatures look ok at 1cm. 2133 Readback check ok 2131-2137 *SC subreflector not reaching position in 15359 100 6 ROTATION at 4cm. Stalling out roughly 1.5 counts off in position. Have done MASTER CLEAR resets and reloading of current observation scan to no effect. 2203 *HN bad readback drive 2 track 9; all other sites ok 2233 Readback check ok 2300 New Operator: Brian Willard. 2303 All readback tests OK. 2302-2309 *SC: FRM rotation will not go to commanded value. 15359 100 7 2333 All readbacks ok. 2347 End observing SC. 0000 Date is 2005JAN18/018. 0003 All readback tests OK. 0034 All readback tests OK. 0104 All readback tests OK. 0133 All readback tests OK. 0154 End. Downtime Summary: Total downtime : 822 min Percentage downtime of observing: 10.5% Average downtime per hour : 6.3 min Total scheduled observing time (# Antennas): 7854 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.