VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BH105E Observer: Hough, D.H. Project type: VLBA Obs filename: bh105ecrd.* Date/Day: 2003AUG16/228 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 Webcam Wea: SC,HN & OV; Not working. NL - Clear. FD & KP - Mostly clear, a few cirrus. LA,PT & BR Mostly cloudy. MK - dark. SC On generator power. No affect on data. 1237 File begins. MK starts later. 1247 File starts at MK. 1312 MK Readback is okay. 1327-1329 *SC Commercial power tried to come back. COM 100 2 1345 New operator Cyrus M Reed. 1356-1359 *SC commercial power is back, autostow on transfer. COM 100 3 1408 MK readbacks OK. 1440-1442 *SC autostowed due to power glitch. Repointed. COM 100 2 1451-1453 *SC autostowed due to power glitch. Repointed. COM 100 2 1500-0027 %SC ellipsoid is flagging occasionally as out of position on 4cm scans, however the position is correct as reported by SCREENS. 1501 *SC on generator power. 1512-1513 *SC commercial power tried to come back. Autostow. COM 100 1 1521-1523 *SC commercial power tried to come back. Autostow. COM 100 2 1524 MK readbacks OK. 1655 MK readbacks OK. 1714-1716 *PT autostowed due to power glitch. Repointed. COM 100 2 1715-1716 *KP autostowed due to power glitch. Repointed. COM 100 1 Also required reset of FRM. 1744 *LA bad readbacks: Drive 1, ODD Tracks 03-17. 12187 All other readbacks OK (all sites). 1803-1804 *SC commercial power tried to come back. Autostow. COM 100 1 1806 BR WEA: Reports broken low clouds, chance of thunderstorms. No precipitation. 1836-1840 *SC Focus motor no power - cleared with master FRM 100 4 clear and re-read of current scan. 1843 *LA bad readbacks: Drive 1, ODD Tracks 03-17. 12187 All other readbacks OK (all sites). 1915 *LA bad readbacks: Drive 1, ODD Tracks 03-17. 12187 *OV bad readback: Drive 1, Track 30. All other readbacks OK (all sites). 1933 *LA bad readbacks: Drive 1, ODD Tracks 03-17. 12187 All other readbacks OK (all sites). 1946-1947 *SC commercial power tried to come back. Autostow. COM 100 1 2024 *LA bad readbacks: Drive 1, ODD Tracks 03-17. 12187 All other readbacks OK (all sites). 2030 *LA bad readbacks: Drive 1, ODD Tracks 03-17. 12187 All other readbacks OK (all sites). 2032-2035 *PT autostowed due to power glitch. Repointed. COM 100 3 2045 WEA: SC,HN Unknown (webcam not updating). WEA: HN,NL Light haze. OV,MK Clear skies. WEA: FD,LA,KP,BR Partly cloudy. (50%,25%,80%,20%) WEA: PT Overcast /w low clouds. 2052 *LA bad readbacks: Drive 1, ODD Tracks 03-17. 12187 All other readbacks OK (all sites). 2117 *LA bad readbacks: Drive 1, ODD Tracks 03-17. 12187 All other readbacks OK (all sites). 2118-2119 *HN autostowed due to power glitch. Repointed. COM 100 1 2127-2129 *PT autostowed due to power glitch. Repointed. COM 100 2 2153-2154 *PT autostowed due to power glitch. Repointed. COM 100 1 2215-2217 *SC commercial power tried to come back. Autostow. COM 100 2 2215 *LA bad readbacks: Drive 1, ODD Tracks 03-17. 12187 All other readbacks OK (all sites). 2231-2232 *SC commercial power tried to come back. Autostow. COM 100 1 2240-2242 *SC commercial power tried to come back. Autostow. COM 100 2 2250-2251 *SC commercial power tried to come back. Autostow. COM 100 1 2251 *LA bad readbacks: Drive 1, ODD Tracks 03-17. All other readbacks OK (all sites). 2255-2256 *SC commercial power tried to come back. Autostow. COM 100 1 2256-2331 *SC commercial power is trying really hard to come COM 100 35 back - waiting for things to stabilize before repointing. 2310 *SC site tech reports problems with WAPA power that are making the generator kick in and out, which has also affected the A compressor pressures for the FE CRYO system - the 2/4cm recievers have warmed. The site tech will leave the site on generator power until morning. 2359 SC readbacks OK. 2331 SC On source, FE temps are back to normal. Generator is locked in on position. 2339 All readbacks OK (except SC - none scheduled). 0000 Date is 2003AUG17/229. 0008 SC finished observing. 0027 End. Downtime Summary: Total downtime : 70 min Percentage downtime of observing: 1.0% Average downtime per hour : 0.6 min Total scheduled observing time (# Antennas): 7100 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.