VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BO019C Observer: R. Ojha Project type: VLBA Obs filename: bo019ccrd.* Date/Day: 2005JAN28/028 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Jim Ogle. LA writing to Mk5 disc pack NRAO-013 in bank A. Sitecam weather: high thin clouds at NL, partly cloudy at LA, overcast conditions at OV and BR, clear everywhere else. VCLOCK and gps delta checks okay. 2139 Begin. 2139-2230 Readbacks at 2156, 2207, 2216 and 2226 UT all okay. 2237 Readbacks okay at all sites. 2244 KP reports clear skies. 2300 Operator is Sonja Mendoza. 2300-0000 Readbacks at 2303, 2313 and 2355 UT all okay. Readback at SC only at 2339 UT okay. 0000 Day is 2005JAN29/029 0003 OV WEA: Overcast skies, no precipitation. 0038 %MK WEA: wind gusts > 35mph. 0000-0100 *PT Bad readback at 0004 UT, drive 1, track 4, all others okay. *PT Bad readback at 0022 UT, drive 1, track 4, all others okay. Readback at 0056 UT, all okay. 0130 %BR WEA: precipitation starting. 0100-0200 Readbacks at 0106 UT all okay. *HN Bad readback at 0115 drive 1, tracks 14 and 18, all others okay. 0200-0300 Readbacks at 0200, 0209, 0219 and 0229 UT all okay. 0342 %MK WEA: wind gusts > 35mph. 0300-0400 Readbacks at 0314 and 0323 UT all okay. *FD Bad readback at 0358 UT, drive 1, track 4, all others okay. 0435 %MK WEA: wind gusts > 35mph. 0400-0500 Readbacks at 0425 and 0459 UT all okay. Readbacks at 0434 UT for SC, HN only okay. 0500-0600 Readbacks at 0510, 0519 UT ok 0554 %MK WEA: wind gusts > 35mph. 0628 New operator: T. Perreault 0700-0800 Readbacks at 0709 (SC only), 0725, 0735, 0753 ok 0800-0900 Readbacks at 0802, 0822, 0840 ok all sites except: *HN bad readback track 18 drive 1 at 0822 UT 0900-1000 Readbacks at 0907, 0925, 0953 all ok 1000-1100 Readbacks at 1010, 1038, 1047, 1055 ok except: *PT bad readback track 4 drive 1 at 1047 UT 1100-1200 Readbacks at 1106, 1115, 1129, 1157 ok except: *PT bad readback tracks 4,7 drive 1 at 1115 UT 1129 SC wea: clear, no precipitation 1200-1300 Readbacks at 1208, 1217 ok 1300-1400 Readback at 1317 ok 1441 New operator is Jim Ogle. 1526 %High wind gusts at OV. 1400-1600 Readbacks at 1536 and 1545 UT all okay. 1600-1700 Readbacks at 1603, 1613 and 1638 UT all okay. 1721 %Sitecam weather: partly cloudy skies at SC and OV; clear at HN, PT and MK; overcast at NL; fog at KP and BR; mostly clear skies at LA; FD sitecam down. Some snow visible in dish at HN. 1700-1800 Readbacks at 1722, 1731, 1748 and 1758 UT all okay. 1800-1900 Readbacks at 1823 and 1849 UT all okay. 1900-2000 Readbacks at 1906, 1915, 1932 and 1950 UT all okay. 2000 %Sitecam weather update: overcast at KP, mostly cloudy at MK. Remaining sites the same, though BR fog isn't as thick as it was earlier. 2010 Readbacks okay. 2146-2150 *MK ran out of tape early. TAPE 100 4 2150 End. Downtime Summary: Total downtime : 4 min Percentage downtime of observing: 3.6% Average downtime per hour : 2.2 min Total scheduled observing time (# Antennas): 110 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.