VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BL149BA Observer: Lister, M. Project type: VLBA Obs filename: bl149bacrd.* Date/Day: 2008AUG06/219 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is A. Sowinski. UT1-UTC -0.46, gps delta and vclock OK. *FD dew point sensor not working, damaged by a 23144 lightning strike last month. FRM also a bit glitchy for the same reason. 1010 Begin. 1109 *HN Raining. 1238 FD reports wea: clear, dry. 1333 New operator is Jim Ogle. 1349-1350 *FD focus brake fault. 23144 100 1 1428-1431 *FD focus brake fault. 23144 100 3 1505 OV reports clear skies. 1526 KP reports scattered high clouds. 1616-1620 *FD focus brake fault. 23144 100 4 1714-1717 HN comm down still observing 1718-1721 SC comm down still observing 1728-1730 *FD focus brake fault. 23144 100 2 1932 MK reports scattered cirrus clouds. 2120 New operator: T. Perreault 2125-2130 *FD focus brake fault - cleared 23144 100 5 2128 KP wea: scattered low clouds, no precipitation 2212-2220 *PT autostowed. Power glitch. Repointed. COM 100 8 2232-2238 *PT autostowed. Power glitch. Repointed. COM 100 6 Autostowed again following another power glitch while slewing to source. Repointed. 2244-2249 *FD focus brake fault 23144 100 5 2250-2254 *PT autostowed. Power glitch. Repointed. COM 100 4 2309-2312 *PT autostowed. Power glitch. Repointed. COM 100 3 2310 MK wea: scattered cirrus 2347 OV wea: cloudy, no precipitation 2355-2359 *FD Master/Control Bus error FRM 100 4 0000 Date is 2008AUG07/220. 0004-0005 *FD focus brake fault 23144 100 1 0018-0023 *KP autostowed. Power glitch. Repointed. COM 100 5 0038-0045 *KP autostowed. Power glitch. Repointed. COM 100 7 0050-0056 *KP autostowed. Power glitch. Repointed. COM 100 6 0143-0150 *KP autostowed. Power glitch. Repointed. COM 100 7 Autostowed again almost as soon as antenna was on source. Repointed. 0322-1006 %SC FRM control board shorted out, it's in the 23237 100 404 correct position but focus may be off slightly since it's no longer being adjusted for elevation. 0343-0351 *FD focus brake fault 23144 100 8 0438-0443 *FD off position in focus FRM 100 5 0451-0502 *FD focus brake fault 23144 100 11 0507-0515 *FD focus brake fault 23144 100 8 0533-0536 *FD focus brake fault 23144 100 3 0547 Operator is A. Sowinski. 0547-1006 *FD Frequent FRM focus brake faults. 23144 10 25 1006 End. Downtime Summary: Total downtime : 535 min Percentage downtime of observing: 3.7% Average downtime per hour : 2.2 min Total scheduled observing time (# Antennas): 14360 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.