VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BD076C Observer: J. Desmurs Project type: VLBA Obs filename: bd076ccrd.* Date/Day: 2003DEC06/340 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Jim Ogle. VCLOCK and gps delta check okay. *Snowing at HN. 1712 Begin. 1712-1732 *NL unable to observe, possibly a bad board in the 11297 100 20 site computer causing the observing system to hang. &Site tech called out, he was just arriving at the site for tape change when I contacted him. 1717 Readbacks okay. 1725 Readbacks okay. 1731 Readbacks okay. 1732 NL tech reseated computer boards, starting up observing system to see if it'll run. 1746-2236 *NL observing system dead again. Shutting down the 11297 100 290 observation there. 1808 Readbacks okay. 1822 Readbacks okay. 1833 %SC repoorts overcast skies, low clouds. 1854-1855 *SC autostowed, commercial power glitch. Repointed. COM 100 1 1859 *HN reports blizzard conditions, 6" of snow on ground. 1912 Readbacks okay. 1924-1925 *LA autostowed, commercial power glitch. Repointed. COM 100 1 1940 MK reports scattered clouds. 2006 Readbacks okay. 2011 Readbacks okay. 2053 Readbacks okay. 2105 Readbacks okay. 2145 Readbacks okay. 2150-2152 *SC autostowed, commercial power glitch again. COM 100 2 2151 Readbacks okay. 2236 End. Downtime Summary: Total downtime : 314 min Percentage downtime of observing: 9.7% Average downtime per hour : 5.8 min Total scheduled observing time (# Antennas): 3240 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.