VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: MT807 Observer: Data Analysts Project type: TEST Obs filename: mt807crd.* Date/Day: 2008FEB15/046 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 checks okay. *Snowing at KP. %High wind gusts at OV. 1503 Begin. 1503-1634 *HN unable to observe, FRM is iced up and won't 22193 100 91 move. 1503-1543 *KP unable to observe, ice on antenna has tripped 22246 100 40 the EL final limit switch and antenna won't move. 1518-1520 *NL rotation motor foldback error. It's very cold at FRM 100 2 site, that may be slowing the FRM down. 1518-1525 *MK 13cm receiver inoperable. 22203 100 7 1533-1535 *NL rotation motor foldback error again. FRM 100 2 1539-1541 *NL rotation motor foldback again. FRM 100 2 1543-1634 *KP techs cleared ice of limit switch, advised we WEA 100 51 run avoidsnow rather than begin observing. 1556-1602 %BR 7mm cryo cycling, Tsys may be elevated. 22243 100 6 1634 End. Downtime Summary: Total downtime : 201 min Percentage downtime of observing: 22.1% Average downtime per hour : 13.3 min Total scheduled observing time (# Antennas): 910 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.