VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BK107B Observer: Krichbaum, T. Project type: VLBA Obs filename: bk107bcrd.* Date/Day: 2004APR28/119 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK EB =UT-Time===Comment===============================================MF#===%AD==AMD= 2357 Begin file VCLOCK check ok. SC at -0.142 UT1-UTC check ok GPS delta < 10 us Operator: T. Perreault 2357-1439 SC & BR have no 3mm receivers but are commanded SCH to observe at 3mm in the observing file. Data for these two antennas while observing at 3mm will be trash. 0000 Date is 2004APR29/120. 0045-0058 *LA autostowed. Wind gust in excess of 55 mph WEA 100 13 (24 m/s). Will wait a few minutes to see if winds die off a bit. 0055 %LA & OV have continued high winds. Pointing will be WEA affected. 0119-0123 MK loss of Internet communication 0143 LA bad readback drive 2 track 33; all other sites ok No readback at PT 0200 Readback check ok 0217 Readback check ok; no readback at FD 0245 LA bad readback drive 2 track 33; all other sites ok No readback at FD or MK 0313 Readback check ok; no readback at MK 0330 Readback check ok; no readback at MK 0347 Readback check ok; no readback at MK 0415 Readback check ok, no readback at PT, MK 0443 LA bad readback drive 2 track 33; all other sites ok No readback at FD, PT, and MK 0459 Readback check ok; no readback at FD,PT and MK. 0516 Readback check ok; no readback at FD,PT and MK. 0535 New Operator is Dave Pierce. 0544 LA bad readback drive 2, track 33. All other 0544 site readbacks are okay. 0545 *KP WEA: Wind gusts > 40 mph. 0629 Readback check ok; no readback at FD. 0646 La bad readback drive 2, track 33. PT all tracks were bad, readback happened as drives were swapping. All other readbacks are okay. 0714 OV bad readbacks on drive 1, tracks 4 and 32. All other site readbacks are okay. 0742 All readbacks are okay. 0759 All readbacks are okay. 0816 All readbacks are okay. 0825 *KP WEA: Wind gusts > 45 mph. 0844 All readbacks are okay. 0912 All readbacks are okay. 0929 Readbacks check ok; no readback at KP,OV and BR. 0946 All readbacks are okay. 1014 All readbacks are okay. 1033 All readbacks are okay. 1052 All readbacks are okay. 1110 SC WEA: Clear, no precipitation, dry dish. Wind speed 8m/sec. 1111 Readbacks check ok; no readback at KP. 1130 All readbacks are okay. 1136 *KP WEA: Wind gusts > 35 mph. 1149 All readbacks are okay. 1154 WebCam Weather Update: HN, FD - Clear. NL - Mostly clear, scattered high thin cirrus. 1208 All readbacks are okay. 1225 Webcam Weather Update: LA,PT and BR - Clear. 1227 All readbacks are okay. 1246 All readbacks are okay. 1300 *KP WEA: Wind gusts > 40 mph. 1305 All readbacks are okay. 1323 SC File ends. 1324 All readbacks are okay. 1343 Readbacks are okay. *MK WEA: Wind gusts > 35 mph. 1345 New operator Cyrus M Reed. 1402 All readbacks OK. 1421 All readbacks OK. 1439 End. Downtime Summary: Total downtime : 13 min Percentage downtime of observing: 0.1% Average downtime per hour : 0.1 min Total scheduled observing time (# Antennas): 8820 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.