VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BH115 Observer: Hough, D.H. Project type: VLBA Obs filename: bh115crd.* Date/Day: 2003AUG13/225 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Dave Pierce. VCLOCK and GPS Delta check okay. UT1-UTC: -0.35 PT will start at 1244 UT. 1001 File begins at all sites except PT. 1001-0938 *KP is unavailable due to a dead maser. 12160 100 1417 1001-0938 *FD BBC #7 is dead. 12155 13 184 1024 All readbacks are okay. 1054 All readbacks are okay. 1128 All readbacks are okay. 1128-1131 *NL Autostowed. Power glitch. Repointed. COM 100 3 1138 Webcam WEA: SC - Partly cloudy, NL - Clear. Other sites still dark. 1154 %BR Only the even tracks through track 24,drive 2 came back. They were okay. All other site readbacks are okay. 1211-1212 *NL Autostowed. Power glitch. Repointed. COM 100 1 Communicated with Site Tech and there are no weather related issues at site to explain power bumps. He will make inquiries of power company. 1219 *BR Bad readbacks on 2, tracks 2 and 4. All other site readbacks are okay. 1230 %HN WEA: Overcast, low clouds, wet dish, no precip. 1238 All readbacks are okay. 1242 SC UPS alarm keep going on and off. Data is OK. 1246 File begins at PT. 1258 *OV Bad readbacks on Drive 2, tracks 4 and 12. All other site readbacks are okay. 1315 LA WEA: Clear, dry dish, no precip. 1324-1331 *BR Drive 2, tape failed to stop when REC 100 7 commanded to original position: 221 feet. Drive then unloaded. Reloaded tape, drive started on scan change. 1324 All readbacks are okay. 1356 %MK's 4cm FE is a bit warm at 35K. 1400 New Op. D. Medcalf. 1428 All readbacks okay. 1501 BR wea: clear sky, dry. 1513-1533 *All readbacks okay except OV2, all tracks. Have asked site tech to load new tape on this drive. OV did another readback while we were waiting for a chance to switch drives and now all tracks are okay. Will continue to use the current tape for now. There was a short period of time when the tape was moving at 330 ips. 1540 Looks like OV switched to drive 1 anyway. 1553 *All readbacks okay except OV1 track 4. 1611 SC is taking a long time to get on source. 1628 All readbacks okay. 1708 %Raining at HN. 1712 *All readbacks okay except SC2 many tracks. 1728-1730 *HN autostowed. WEA 100 2 1812 *All readbacks okay except for SC drive #2. SC Poor readbacks on tracks 12 14 16 20 22 24 26 28 30 32. 1908 MK wea: clear, light wind. 2007 *SC drive 2 has now had three bad readbacks affecting the same tracks, so have switched to the other rec. 2012 All readbacks okay. 2056-2058 *PT autostowed. COM 100 2 2115-2118 *PT autostowed. COM 100 3 2122-2123 *PT autostowed. Yet another power glitch. COM 100 1 2139 New Operator is Jim Ogle. 2142 Readbacks okay. 2204-2205 *PT autostowed, commercial power glitch. COM 100 1 2211 Readbacks okay. 2241 Readbacks okay. 2245-2247 *PT autostowed, power glitch. COM 100 2 2259-2301 *PT autostowed. COM 100 2 2300 OV reports partly cloudy skies. 2311 Readbacks okay. 2325-2326 *PT autostowed. COM 100 1 2332-2337 *PT autostowed. COM 100 5 2341 Readbacks okay. 2354-2356 *PT autostowed. COM 100 2 2358-0001 *PT autostowed. COM 100 3 0000 Date is 2003AUG14/226. 0011 Readbacks okay. 0031-0033 *PT autostowed. COM 100 2 0041 Readbacks okay. 0106-0108 *PT autostowed. COM 100 2 0111 Readbacks okay. 0141 Readbacks okay. 0156-0203 *PT autostowed. COM 100 7 0204 %High wind gusts at LA. 0211 Readbacks okay. 0226 Readbacks okay. 0241 Readbacks okay. 0256 Readbacks okay. 0310 Readbacks okay. 0311-0312 *PT autostowed. COM 100 1 0325 Readbacks okay. 0340 Readbacks okay. 0411 Readbacks okay. 0440 Readbacks okay. 0442 End at PT. 0510 Readbacks okay. 0540 New operator is Dave Pierce. 0540 All readbacks are okay. 0610 All readbacks are okay. 0640 All readbacks are okay. 0710 Readbacks okay. 0806 Readbacks okay. 0825 Readbacks okay. 0840 Readbacks okay. 0906 Readbacks okay. 0924 Readbacks okay. 0938 End. Downtime Summary: Total downtime : 1648 min Percentage downtime of observing: 11.6% Average downtime per hour : 7.0 min Total scheduled observing time (# Antennas): 14170 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.