VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BG145A Observer: L. Greenhill Project type: VLBA Obs filename: bg145acrd.* Date/Day: 2004FEB19/050 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Paul Dyer. 0353 Begin at all stations. 0353 *KP WEA: Wind gusts > 35mph. 0359 All readbacks ok. 0418 %PT Bad readback on drive 1, track 21. All others ok. 0449-0452 *KP Autostowed. EL #2 armature overcurrent. ACU 100 3 0539 All readbacks ok. 0554-0808 *KP I stowed the antenna. High winds are causing WEA 100 134 the AZ motor currents to exceed safe limits. 0558 %PT Bad readback on drive 1, track 21. All others are ok. 0622 All readbacks ok. 0629 All readbacks are okay. 0635 New operator is Dave Pierce. 0648 Readbacks are okay. 0712 %FD Bad readbacks on Drive #1, tracks 2 and 4. Other site readbacks are okay. 0719 All readbacks are okay. 0723 %OV Wind gusts > 35 mph. 0738 All readbacks are okay. 0809 All readbacks are okay. 0828 All readbacks are okay. 0853 %SC WEA: Precipitation starting. 0900 %FD Bad readbacks on Drive #1, tracks 2 and 16. All other site readbacks are okay. 0920 All readbacks are okay. 0952 All readbacks are okay. 1012 All readbacks are okay. 1044 All readbacks are okay. 1045-1058 *BR Tape(EVNT0487) failed to stop when commanded 13458 100 13 to original position(281ft). Tape subsequently unloaded. Reloaded tape. 1104 All readbacks are okay. 1125 SC WEA: Clear. 1136 All readbacks are okay. 1156 All readbacks are okay. 1220 Readbacks are okay. 1221 *PT WEA: Wind gusts > 35 mph. 1227 All readbacks are okay. 1246 All readbacks are okay. 1247 HN WEA: Clear, dish is dry. 1317 All readbacks are okay. 1328-1330 *PT Autostowed. High winds. Repointed. WEA 100 2 1334 %PT WEA: Wind gusts > 35 mph. 1336 All readbacks are okay. 1400 Webcam Weather Update: SC - Clear. HN,KP - Mostly clear, high scattered clouds. NL,PT - Overcast. FD,LA - Partly cloudy. 1400 All readbacks are okay. 1404 FD WEA: Scattered alto cumulus, dish is dry. 1406 SC File ends. 1407 All readbacks are okay. 1422 %LA WEA: Wind gusts > 35 mph. 1426 All readbacks are okay. 1445 KP WEA: Scattered high clouds, dish is dry. 1445 New operator Cyrus M Reed. 1451 All readbacks OK. 1457 All readbacks OK. 1500 WEA: Cloud cover via webcam: WEA: SC,PT,KP,OV Clear skies. WEA: HN,FD Cloudy. (10%,80%) WEA: NL,LA,BR Overcast. MK Unknown (night). 1516 All readbacks OK. 1535 All readbacks OK. 1541 End. Downtime Summary: Total downtime : 152 min Percentage downtime of observing: 2.1% Average downtime per hour : 1.3 min Total scheduled observing time (# Antennas): 7080 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.