VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BO013C Observer: Ojha, R. Project type: VLBA Obs filename: bo013ccrd.* Date/Day: 2003FEB24/055 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= 1855 Begin file VCLOCK check ok. SC at -0.171 GPS delta < 10 us Operator: T. Perreault 1855-1906 *SC antenna taken locally for VIP tour. OTHER 100 11 1855-1102 *PT no 90cm dipole, was removed when new 10830 33 319 subreflector was installed. 1910-1918 *HN subreflector drifting from commanded position 10926 100 8 in rotation at 4/13cm observing. 1928 MK wea: scattered cumulus, no precipitation 1949 Readback check okay 1959-2005 *HN subreflector drifting from commanded position 10926 100 6 in rotation at 4/13cm observing. 2109-0007 *KP possible tripped breaker in Ped room. Seeing many AELEC 100 178 errors for all Front ends. Site tech is going to check on the problem. The problem was a bad 15V power supply. Replaced. 2117-2121 *HN subreflector drifting from commanded position 10926 100 4 in rotation at 4/13cm observing. 2120 KP site tech has taken antenna locally to work on the problem with tripped breakers. 2214-2222 *HN subreflector drifting from commanded position 10926 100 8 in rotation at 4/13cm observing. 2229-2233 *HN subreflector drifting from commanded position 10926 100 4 in rotation at 4/13cm observing. 2240 New Operator is Dave Pierce. 2328 MK WEA: Clear 0000 Date is 2003FEB25 / 056. 0007-1102 *KP 90cm data will be bad for the rest of this FE 25 163 project. The UHF 15V power supply was used to enable the rest of the system when the main power failed. A new power supply is being sent. 0007-0450 *KP The 15K and 50K cyrogenics warmed up during AELEC 100 283 the power disruption. They have begun cooling. Data from the 4cm scans may be bad during this period. 0030 All readbacks are okay. 0045 *KP Remotely rebooted site computer to reset and clear some readings from power disruption. 0132 All readbacks are okay. 0207 All readbacks are okay. 0211 *KP Remotely rebooted site computer. 0335 All readbacks are okay. 0347 %KP WEA: Experienced a plus 55mph wind gust. 0445 %FD The 13cm, 50K stage, has been slowly 10927 warming up over the last 12 hours. May affect data. 0504-0506 *KP not in point mode. Repointed. WEA 100 2 Probably wind related. 0537 All readbacks are okay. 0630 All readbacks are okay. 0645 New operators are Paul Dyer. and Cyrus Reed. 0754 %KP WEA: High wind gusts. ~40mph 0803 All readbacks OK. 0822 All readbacks OK. 0909 All readbacks OK. 0916 All readbacks OK. 0930 All readbacks OK. 0936 MK readbacks OK. 0940 FD readbacks OK. 0950 SC readbacks OK. 1000 All readbacks OK. 1011 All readbacks OK. 1033 All readbacks OK - EXCEPT OV drive 2 track 15. 1040 All readbacks OK. 1046 All readbacks OK. 1052 All readbacks OK. 1102 End. 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 = TP/SP x Tcal/2