VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BL149BO Observer: Lister, M. Project type: VLBA Obs filename: bl149bocrd.* Date/Day: 2009JUN25/176 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Betty Ragan. Vclock, UT1-UTC, gps delta all OK. 0358 Begin at all sites except SC. 0358-1944 *NL unavailable due to HVAC problems. 25061 100 946 0358 %HN drizzling rain. 0358-0356 %FD 2cm cryo cycling up to ~40K. 25080 100 1438 0405 Begin at SC. 0539 New Operator: Paul Padilla 1310-1312 *SC Mark5 Communications lost. Came back on its REC 100 2 own 1335 New operator: T. Perreault 1358 LA wea: scattered clouds, no precipitation 1416 BR wea: few high scattered clouds, no precipitation 1428 PT wea: partly cloudy, no precipitation 1511 OV wea: clear, no precipitation 1521 KP wea: low overcast, no precipitation 1751-1755 %PT Formatter errors FMTR Header control module 1 error HC1 FIFO error FIFO 0 1PPS detected 1823-1826 *PT autostowed. Power glitch. Repointed by site tech. COM 100 3 1832-2039 *MK loss of internet communication with site. COM 100 127 Went on dial backup at 1844 UT, modem connected but was unable to communicate with site - suspect that either the VME station computer or the Mark5 crashed (or both). Site techs should be onsite soon, will wait to hear from them as to the status. 1837-1839 *PT autostowed. Power glitch. Repointed by site tech. COM 100 2 1908 MK site tech reports that site is on generator and that not all of the lights are working. He is going to check on things and get back with operations. VME and Mark5 are running fine. 1930 MK site tech called, reported that the two 60Kv lines that feed power to the mountain are down, no estimate as to when power will be restored. This however doesn't explain why dial backup modem isn't working. Contacted Gene Runion to talk with site tech to see if we can get the modem to work so we can monitor the site and shut down observing until power is restored. 1936-1938 *PT autostowed. Power glitch. Repointed by site tech. COM 100 2 1941 %KP wea: low overcast, very light rain 1944 %NL seeing elevated system temperatures at 2cm. 1947-1949 *PT autostowed. Power glitch. Repointed. COM 100 2 2039 MK power is restored along with communications. Resuming observation. 2102-2106 *PT autostowed. Power glitch. Repointed. COM 100 4 2150 New operator is Betty Ragan. 2155-2200 *PT autostoweed. Power glitch. COM 100 5 Stowed again for same reason before it got on source. 2217-2219 *OV autostowed. Probably a power glitch. COM 100 2 2303 MK wea: scattered cirrus and cumulus clouds. OV wea: clear and dry. 2332 %PT raining. 0000 Date is 2009JUN26/177. 0055 %LA raining. 0104-0106 *PT autostowed. Power glitch. COM 100 2 0123-0124 *PT autostowed again. COM 100 1 0154-0155 *PT autostowed. COM 100 1 0352 End at MK. 0356 End. Downtime Summary: Total downtime : 2537 min Percentage downtime of observing: 17.6% Average downtime per hour : 10.6 min Total scheduled observing time (# Antennas): 14380 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.