VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BT066 Observer: G. Taylor Project type: VLBA Obs filename: bt066crd.* Date/Day: 2003FEB02/033 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Jim Ogle. VCLOCK and gps delta check okay. *HN and BR snow and ice in dishes. %High wind gusts at FD, LA, PT, KP, OV and MK. 2053 Begin at all sites except MK. 2053-2235 *PT 6cm and 2cm receivers running a bit warm, a CRYO 40 40 commercial power failure before the observation tripped something and a cryo compressor didn't reset. Commercial power at site is still unstable and may cause autostows during experiment. 2054-2056 *PT off source, autostowed at start of project. COM 100 2 2100-2105 *PT autostowed. COM 100 5 2107-2108 *PT autostowed. COM 100 1 2117-2118 *PT autostowed. COM 100 1 2142-2148 *SC data from 2cm receiver probably bad. 10752 100 6 2142-2144 *HN rotation position error. FRM 100 2 2148 Readbacks okay. 2221 %BR reports overcast conditions, low clouds. 2228 %PT 6cm receiver is cooling rapidly now, but the 2cm receiver continues warming. Site tech is still working on it. 2235 *PT site tech reports the 2cm cryo has failed, receiver will not cool. 2238-2244 *SC data from 2cm receiver probably bad. 10752 100 6 2238-2244 *PT 2cm receiver warm. CRYO 100 6 2244-2247 *HN rotation position error. FRM 100 3 2245 Readbacks okay. 2247 Begin at MK. 2311-2313 *HN rotation position error. FRM 100 2 2312 Readbacks okay. 2323-2328 *SC data from 2cm receiver probably bad. 10752 100 5 2323-2328 *PT 2cm receiver warm. CRYO 100 5 2329 Readbacks okay. 2350-2356 *SC data from 2cm receiver probably bad. 10752 100 6 2350-2356 *PT 2cm receiver warm. CRYO 100 6 2356-2358 *HN rotation position error. FRM 100 2 0000 Date is 2003FEB03/034. 0002 %VLGET died, monitoring software crashed. Restarted. 0024-0025 *HN EL#2 armature over current fault. ACU 100 1 0025-0026 *KP focus motion analysis fault. FRM 100 1 0025 Readbacks okay. 0046-0052 *SC data from 2cm receiver probably bad. 10752 100 6 0046-0052 *PT 2cm receiver warm. CRYO 100 6 0052-0054 *HN EL#2 armature over current fault. ACU 100 2 0122-0123 *HN EL#2 armature over current fault. ACU 100 1 0148-0154 *SC data from 2cm receiver probably bad. 10752 100 6 0148-0154 *PT 2cm receiver warm. CRYO 100 6 0155-0156 *KP focus motion analysis fault. FRM 100 1 0243 New operator is Paul Dyer. 0252-0258 *SC data from 2cm receiver probably bad. 10752 100 6 0252-0258 *PT 2cm receiver warm. CRYO 100 6 0327 All readbacks ok. 0326-0330 *HN FRM Rotation position error. FRM 100 4 0338-0343 *SC data from 2cm receiver probably bad. 10752 100 5 0338-0343 *PT 2cm receiver warm. CRYO 100 5 0343 %BR Bad readbacks on drive 1, tracks, 14,16,20,30,32. 0405-0411 *SC data from 2cm receiver probably bad. 10752 100 6 0405-0411 *PT 2cm receiver warm. CRYO 100 6 0442 *FD WEA: Wind gusts > 35 mph. 0449-0450 *BR Put antenna in standby briefly. AZ motor ACU 100 1 current sum is running high. Sum returned to normal for a minute after repointing, but then jumped up again. Both motors running -17A. 0500 BR Called site tech but no answer on either home or cell phone. No answering machine either. 0500 BR Scan change and currents returned to normal for a minute, then increased, AZ1=3A, AZ2=-33A. Wind is NOT a factor. Max gusts < 2mph. 0501-0507 *SC data from 2cm receiver probably bad. 10752 100 6 0501-0507 *PT 2cm receiver warm. CRYO 100 6 0507 BR After scan change, same source, current returns to normal for one minute, then climbs again. 0520 BR Got ahold of tech. On his way to check it out. 0535 All readbacks ok. 0556-0602 *SC data from 2cm receiver probably bad. 10752 100 6 0556-0602 *PT 2cm receiver warm. CRYO 100 6 0624 SC End of file. 0631 All readbacks ok. 0652-0658 *PT 2cm receiver warm. CRYO 100 6 0727 %BR Bad readbacks on drive 1, tracks 7,9,15,17,31,33. All others ok. 0748-0754 *PT 2cm receiver warm. CRYO 100 6 0755 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