VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BL123A Observer: Lister, M. Project type: VLBA Obs filename: bl123acrd.* Date/Day: 2005JAN06/006 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Sonja Mendoza. Vclock, GPS delta and time checks okay at all sites. No Mark5 recorders in use for this observation. 2154 Begin observation. 2154 SC,NL,LA,OV,KP.PT wea: Clear skies, dry. 2154 %HN wea: Snowing earlier in day, some snow in dish. 2154 *NL wea: Snow is in dish, not warm enough to melt out today. 2154 *MK wea: Partly cloudy, high wind gusts, > 35mph. 2154 BR wea: Overcast skies. 2202 Readback check okay at all sites. 2232 %HN wea: Precipitation starting (snow). 2228 Readback check at SC okay. 2245 New operator is Paul Dyer. 2248-2250 *MK Autostowed. No error message. COM 100 2 Probable power glitch. 2250-2259 *MK Autostowed. again. WEA 100 9 Maybe wind stow. High winds, no error message though. Tryed to repoint, it autostowed immediately. 2250 MK, PT I found MK and PT not in stmode. I put them in stmode. 2305 All readbacks ok. 2327 All readbacks ok. 2336 All readbacks ok. 2345 %FD Bad readback on drive 1, track 04. All other sites were ok. 0000 Date is 2005JAN07/007. 0015 All readbacks ok. 0034 %BR Bad readbacks on drive 1, tracks 15 and 17. All other sites were ok. 0104 All readbacks ok. 0112 All readbacks ok. 0144 All readbacks ok. 0213 %Fd Bad readback on drive 1, track 04. All other sites were ok. 0222 All readbacks ok. 0225 *MK High winds continue. Typically 35mph-50mph. 0244-0255 *MK Autostowed. Wind gusts >55mph. WEA 100 11 Will repoint when winds decrease. 0253 All readbacks ok. 0335 All readbacks ok. 0344 All readbacks ok. 0403 All readbacks ok. 0411 All readbacks ok. 0431 All readbacks ok. 0502 All readbacks ok. 0511 %FD Bad readback on drive 1, track 04. All other sites were ok. 0532 %FD Bad readback on drive 1, track 04. All other sites were ok. 0544-0547 *SC Autostowed. Power glitch. COM 100 3 0550-0554 *SC Autostowed. Power glitch. COM 100 4 0613 All readbacks ok. 0632 All readbacks ok. 0640 New operator is Jim Ogle. 0641 Readbacks okay. 0721 Readbacks okay. 0741 Readbacks okay. 0750 %OV bad readbacks on track 5, drive #2. Other sites okay. 0800 %OV bad readbacks on track 5. Other sites okay. 0823-0831 *MK autostowed due to high wind gusts. Repointed. WEA 100 8 0832 Readbacks okay. 0852 Readbacks okay. 0904 Readbacks okay. 0922 %High wind gusts at SC. 0928-0932 *MK autostowed, wind gusts again. WEA 100 4 0936 Readbacks okay. 0956 Readbacks okay. 1008 Readbacks okay. 1055 Readbacks okay. 1115 Readbacks okay. 1128 %OV bad readbacks on track 5. Other sites okay. 1200 End at PT so it can participate in PT-link project AL636C. 1214 Readbacks okay. 1232 Readbacks okay. 1245 Readbacks okay. 1302 Readbacks okay. 1309 *Snowing at BR. 1311 Readbacks okay. 1346 SC reports clear skies. 1402 FD reports clear skies. 1407 Readbacks okay. 1421 Readbacks okay. 1430 Readbacks okay. 1431-1434 *Dumping snow at BR. WEA 100 3 1440-1442 *MK tape not moving, at end of pass. Manually moved SW 100 2 tape forward until low tape sensor came on and then it started writing to next pass. 1447 Readbacks okay. 1452 Operator is Sonja Mendoza. 1457 Readbacks okay. 1457-1505 *MK ACU put in standby mode for short test. SW 100 8 1457 KP WEA: High scattered clouds, dry, no precipitation. 1500 *OV WEA: Snowing, sys. temps are elevated. 1505 Readbacks okay. 1506 LA WEA: Clear skies, dry. 1516 Readback at MK only okay. 1519-1533 *SC ACU faults, antenna out of point. Contacting site ACU 100 14 tech. Probably blown fuses. 1521 *BR WEA: Snowing, approx. 1/2 inch of snow on ground. Condition of the dish is currently unknown. Sys. temps elevated. 1524 Readbacks okay. 1540 Readbacks okay. 1547-1550 *OV WEA: Dumping snow. WEA 100 3 1549 Readbacks okay. 1559-1610 *SC ACU faults, antenna out of point. Different ACU 100 11 error than last time. Repointing, see if error returns: Update: ACU errors returned, site tech is on it. Update: Control fuse replaced, antenna repointed. 1559 Readbacks okay. 1608 Readbacks okay. 1619 Readbacks okay. 1627-2150 *OV WEA: Major snowstorm, placing antenna into avoid WEA 100 1763 snow routine. Suspending observation to save tape. 1628 Readback for SC only okay. 1636 Readbacks okay. 1653 Readbacks okay. 1701 Readbacks okay. 1708 *BR WEA: Snowing. 1711-1715 *BR WEA: Running dump snow routine. WEA 100 4 1718 Readbacks okay. 1729 Readbacks okay. 1737 Readbacks okay. 1738 *MK WEA: Winds > 35mph. 1817 Readbacks okay. 1827 Readbacks okay. 1836 Readbacks okay. 1859 Readback check ok 1915 Readbacks at SC,HN only --okay. 1918 *MK WEA: High wind gusts, > 55mph 1939 Readbacks okay. 1956 Readbacks okay. 2006 Readbacks okay. 2015 Readbacks okay. 2037 Readback at MK only --okay. 2046 Readbacks okay. 2109 Readbacks okay. 2128 Readbacks okay. 2131 PT-Link project over, PT rejoins BL123A. 2150 End. Downtime Summary: Total downtime : 1849 min Percentage downtime of observing: 12.9% Average downtime per hour : 7.7 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.