VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: RDV50 Observer: D. Gordon Project type: GEO Obs filename: rdv50crd.* Date/Day: 2005APR27/117 Ants Scheduled: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Paul Dyer. VCLOCK, GPS Delta, and UT1-UTC check ok. FD is writing Mark V disc pack NRAO-045 in bank A. LA is writing Mark V disc pack NRAO-033 in bank A. PT is writing Mark V disc pack NRAO-014 in bank A. KP is writing Mark V disc pack NRAO-059 in bank B. 1759 Begin at all sites. 1759 Project name in the file is RDV49! 1759-2235 *BR recorder 1 accidentally miscabled to board 16021 100 276 set two. Data recorded on tape VLBA0332 on recorder 1 are no good. 1759-1802 *SC Site tech working on FRM. 15359 100 3 1815 WEA: Web cams show clear skies at SC, FD, PT, KP, OV, and BR. Partly cloudy at NL and LA. Mostly cloudy at HN and MK. HN was raining a little while ago. 1859 *LA WEA: Wind gusts > 35mph. 1907 *HN WEA: Raining. 1927-1945 *OV Armature/electronics CB fault. Motor #1 ACU 100 18 has no current. All four fuses have blown. Site tech working on it. 2035 *HN Intermittant high Tsys in 13cm channels. Most frequently seen in channel 8. Probably RFI. 2108-2117 *SC AZ #1 motor overcurrent (=90A) ACU 100 9 Put the antenna in standby, no help. Disabled the AZ axis and still showed 90A. Finally I stowed it and waited a couple minutes, then repointed. Current returned to normal. 2143 New operator is Jim Ogle. 2304 %BR reports broken low clouds, possibility of rain later. 2310 OV reports partly cloudy skies, windy. 0000 Date is 2005APR28/118. 0126 KP now writing to Mk5 disc pack NRAO-010 in bank A. 0511 %High wind gusts at KP. 0530 New operator is Brian Willard. 0554 WEA: rain HN. 0632 WEA: rain HN. 0649 HN: high Tsys due to weather. 0857-1815 *BR recorder 1 accidentally miscabled to board 16021 100 558 set two. Data recorded on tape VLBA1221 on recorder 1 are no good. 1106 WEA: overcast, wet HN. 1106 WEA: scattered clouds NL. 1138-1139 *SC: ACU diagnostic, OK. ACU 100 1 1142 WEA: broken clouds FD. 1209 WEA: scattered clouds LA,FD. 1217 WEA: clear PT. 1235-1253 *SC: pedestal room maint. ACU 100 18 1247 WEA: clear PT,KP,BR. 1335 New operator: T. Perreault 1351-1419 *SC site techs have taken antenna locally to ACU 100 28 work on ACU issues. 1402 KP site tech called, reports that there is a bad accident on the road to the site. He will be late. 1407 LA wea: broken high clouds, no precipitation 1429 PT writing Mark V bank B pack NRAO-027 1451 OV wea: overcast, no precipitation 1454 KP wea: broken high clouds, no precipitation 1520-1524 *NL autostowed. Power glitch. Repointed. COM 100 4 1638-1640 *KP Autostowed. Power glitch. COM 100 2 1701-1749 *MK Ran out of tape. HUERR 100 48 1749 MK End of file. 1751 *KP WEA: Wind gusts > 35mph. 1755 End of file at KP, LA, OV, and PT. 1800 End of file at FD, HN, NL, and SC. 1805 End. Downtime Summary: Total downtime : 965 min Percentage downtime of observing: 6.7% Average downtime per hour : 4.0 min Total scheduled observing time (# Antennas): 14460 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.