VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BK114D Observer: Kondratko, P. Project type: VLBA Obs filename: bk114dcrd.* Date/Day: 2005APR24/114 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK Y GB EB =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Sonja Mendoza. LA writing on MkV disk pack NRAO-064, bank B. PT writing on MkV disk pack NRAO-021, bank B. KP writing on MkV disk pack NRAO-009, bank A. Vclock, GPS delta, and UT1-UTC time checks all okay. WEA: PT,LA,SC: Rain. WEA: FD,OV,BR: Partly cloudy, high scattered clouds. OV, FD have gusty winds. BR clearing after recent rain. WEA: KP: Increasing cloud cover. WEA: HN,Y: Overcast, recent rain. WEA: MK: Clear skies, dry, light winds. 1710 Begin observation. 1734-1738 *KP Antenna not in point. Circuit Breaker fault. COM 100 4 Problem cleared by itself, repointed antenna. 1802 Readbacks ok. 1805 Readbacks ok (no readback at MK,Y). 1809 Readbacks ok (no readback at OV,BR,MK,Y). 1813 Readbacks ok (no readback at FD,OV,BR,MK,Y). 1819 Readbacks at FD,OV ok. 1821 Readbacks at SC,HN,NL,BR ok. 1829 %NL WEA: gusty winds. 1843 %Y WEA: Mostly cloudy, with isolated rain showers. 1912-1918 *MK: Site tech has noted several formatter errors, he FMTR 100 6 will reboot the VME system to clear errors. Currently MK is on an hour long setup scan so hopefully no critical data is being compromised. 1915 *FD WEA: Site tech reports t-storms in vicinity, skies are overcast. Site tech now reporting small hail. Wind gusts near 35mph. 1921 Readbacks at SC,HN,NL,BR ok. 1926 *FD WEA: Rain starting. 1934-1944 *MK: Site tech resetting formatter. Reboot of VME FMTR 100 10 computer didn't clear formatter errors. Now rebooting VME again to reinitialize the observation. 1945-1950 *PT Antenna not in point, perhaps due to power COM 100 5 glitch. Antenna repointed. 1950 Readbacks ok (no readback at MK). 2000 %Bad readback at Y, tracks 23 and 25, drive 1. All other sites ok. 2035 FD WEA: Skies are clearing. 2050 *LA WEA: Precipitation starting. 2129 Readbacks ok (no readback for MK,Y). 1741 FD WEA: Increasing clouds. 2323 *SC WEA: Precipitation starting. 2331 Readbacks ok. 2349 *PT WEA: Precipitation starting. 2355-2358 *PT Antenna out of point, probably due to power COM 100 3 glitch. Repointed. 0000 Date is 2005APR25/115. 0001 Readbacks ok (no readback at Y). 0022-0801 *BR recorder 1 accidentally miscabled to board 16021 100 459 set two. Data recorded on tape 0VLB0225 on recorder 1 are no good. 0101 %MK WEA: wind gusts > 35 mph. 0115 Readbacks ok. 0133 New operator: T. Perreault 0236 Readback check ok 0246 Readback check ok 0326 Readback check ok 0336 Readback check ok 0346 Readback check ok 0356 Readback check ok 0406 Readback check ok 0416 Readback check ok 0434 Readback check ok 0444 Readback check ok 0454 Readback check ok 0505 Readback check ok 0515 Readback check ok 0526 Readback check ok 0535 Readback check ok 0555 Readback check ok 0605 Readback check ok 0616 FD bad readback drive 2 track 6; all other sites ok 0626 Readback check ok 0637 Readback check ok 0647 Readback check ok 0702 Readback check ok 0708 &NL called oncall site tech. Recorder 1 will HUERR run out of tape soon (on track 14). Tape report indicates no tape up on recorder 2. 0712 NL cksched for this site shows that there is only .1 passes left to go; same for HN which is also on the last pass - neither site will run out of tape unless the tape is short. The call out to the site tech at NL is justified, however, in that the next observing will start before the site techs would normally arrive. There is a significant speed up in the data rate between the end of this file and the start of the next; autoallocate will finish recorder 1 and begin to write on recorder 2. 0723 NL site tech on site. 0743 MK observing ends 0747 Y observing ends 0801 End. Downtime Summary: Total downtime : 487 min Percentage downtime of observing: 5.0% Average downtime per hour : 3.0 min Total scheduled observing time (# Antennas): 9801 min (11) 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.