VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BG145B Observer: L. Greenhill Project type: VLBA Obs filename: bg145bcrd.* Date/Day: 2004FEB20/051 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Paul Dyer. VCLOCK, GPS Delta, and UT1-UTC check ok. 0349 Begin at all sites. 0355 All readbacks ok. 0414 All readbacks ok. 0438 All readbacks ok. 0504 All readbacks ok. 0528 All readbacks ok. 0535 All readbacks ok. 0554 All readbacks ok. 0618 All readbacks ok. 0635 New operator is Dave Pierce. 0644 All readbacks are okay. 0715 %PT Bad readback on Drive #1, track 20. All other site readbacks are okay. 0722 HN Called out Site Tech(Mark), maser and several 13463 rack temperatures are rising. Mark shutdown Contempo B and started Contempo A. He stayed until temps started to drop. Left at 0815. 0734 All readbacks are okay. 0736 %NL WEA: Precipitation starting. 0758 Readbacks are okay. 0805 All readbacks are okay. 0810 *NL WEA: Precipitation starting, again. 0824 Readbacks are okay. 0848 Readbacks are okay. 0856 All readbacks are okay. 0916 All readbacks are okay. 0940 Readbacks are okay. 0948 All readbacks are okay. 1008 All readbacks are okay. 1040 Readbacks are okay. 1042 %FD Switched from Drive #2 to Drive #1, although Drive #2 had only used 7 passes. Then Drive #2 unloaded. Cause is unknown. Tape on Drive #1: EVNT0536 Tape on Drive #2: HST00466 Site Tech reported "ratty" edges on HST00466. Probable cause of unloading. -dwp 1100 All readbacks are okay. 1124 All readbacks are okay. 1132 All readbacks are okay. 1152 All readbacks are okay. 1208 WebCam Weather Update: SC - Partly cloudy, mixture of cirrus and cumulus. HN - High scattered cirrus. 1216 All readbacks are okay. 1223 All readbacks are okay. 1242 All readbacks are okay. 1253-1255 *BR Autostowed. Power bump. Repointed. COM 100 2 1306 All readbacks are okay. 1313 All readbacks are okay. 1332 All readbacks are okay. 1350 WebCam Weather Update: NL - Rain turning to ice and snow. FD - Mostly cloudy. LA, PT - Clear. Other sites to the West are still dark. 1402 SC File ends. 1403 All readbacks are okay. 1422 All readbacks are okay. 1445 New operator Cyrus M Reed. 1447 *KP bad readbacks: Drive 1, Tracks 26,27. All other readbacks OK. 1454 All readbacks OK. 1500 WEA: Cloud cover via webcam: WEA: SC,FD Clear skies. WEA: HN,LA,PT,KP Cloudy. (25%,80%,90%,90%) WEA: NL,BR Overcast. OV Webcam not updating. WEA: MK Unknown (night). WEA: Wet at NL. 1512 All readbacks OK. 1532 All readbacks OK. 1537 End. Downtime Summary: Total downtime : 2 min Percentage downtime of observing: 0.0% Average downtime per hour : 0.0 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.