VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: RDV54 Observer: Gipson, J. & Gordon, D. Project type: GEO Obs filename: rdv54crd.* Date/Day: 2005DEC14/348 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= 1759 Begin file VCLOCK check ok. SC at -0.204 (ping 0.749 second) UT1-UTC check ok (-0.65) GPS delta < 10 us Mark 5 recording status: HN bank B pack NRAO-087 FD bank A pack NRAO-072 LA bank A pack NRAO-135 KP bank A pack NRAO-038 Operator: T. Perreault 1759-1801 %HN 13cm RFI seen on channels 5 & 8 INT 13 187 1759-1801 %BR 13cm RFI seen on channels 5 through 8 INT 25 360 1759-1801 *BR: not fringing, data not usable. 17390 100 1442 1759-1801 %NL high system temperatures at 4cm observing WEA 25 360 due to wet snow covering ~80% of the dish. Sporadic snow flurries continue at the site. 1800 %MK wea: high winds with occasional gusts high enough to cause the antenna to autostow (sustained winds in excess of 55 mph). 1809-1814 *MK autostowed. Sustained winds over 55 mph. WEA 100 5 Repointed. 1910-2006 *MK autostowed. Sustained winds over 55 mph. WEA 100 56 Monitoring wind speed, will repoint when able. 1932 MK attempted to point, autostowed again. 2022-2053 *ML autostowed. Sustained winds over 55 mph. WEA 100 31 Monitoring wind speed. Will repointed when able. 2114-2146 *ML autostowed. Sustained winds over 55 mph. WEA 100 32 Monitoring wind speed. Will repointed when able. 2125-2143 %PT loss of communication with site. Traceroute dead ends at the VLA. Went on dial backup modem, modem is connected to the modem at the site, but we still have no communication. Called site tech, he will check out things there. 2129 KP wea: low broken thin clouds, no precipitation 2143 PT communication through dial backup established. 2214-2222 %PT loss of communication with site again. 2242 New operator is Jim Ogle. 2317-2318 *MK autostowed, high wind gusts. Repointed. WEA 100 1 2341 %BR communications down, on dial backup. 2346 OV reports partly cloudy skies. 2355 MK reports clear skies. 0000 Date is 2005DEC15/349. 0002-0003 *MK autostowed, wind gusts. Repointed. WEA 100 1 0053 FD now writing to Mk5 disc pack NRAO-134 in bank B. 0122-0124 *MK autostowed, wind gusts. Repointed. WEA 100 2 0125-0127 *MK autostowed again. WEA 100 2 0132-0143 *MK autostowed; going to wait for the winds to die WEA 100 11 down a bit before repointing. 0530 LA now writing to Mk5 disc pack NRAO-031 in bank B. 0645 New operator is Anthony Sowinski. 1034 KP Now recording on Mk5 disc pack NRAO-091 in bank B. 1339 SC Site tech: scattered low clouds, dry. 1340 FD Site tech: clear, dry. 1429 LA Site tech: clear skies, no precipitation. 1445 New operator is Brian Willard. 1539 %KP: broken low clouds. %BR: overcast, fog, snow. 1553 HN writing on NRAO-085, Bank A. 1557 %OV: clear 1626 %NL: freezing rain. 1645-1700 *KP: power hit autostow, repointed. COM 100 15 1646-1700 *PT: power hit autostow, repointed. COM 100 14 1800 SC, HN observing ends 1801 End. Downtime Summary: Total downtime : 2519 min Percentage downtime of observing: 17.5% Average downtime per hour : 10.5 min Total scheduled observing time (# Antennas): 14420 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.