VERY LONG BASELINE ARRAY OBSERVING LOG -------------------------------------- Project: BH106B Observer: D.H. Hough Project type: VLBA Obs filename: bh106bcrd.* Date/Day: 2002DEC04/338 Ants Used: SC HN NL FD LA PT KP OV BR MK =UT-Time===Comment===============================================MF#===%AD==AMD= Operator is Paul Dyer. VCLOCK and GPS Delta are ok. 1150 Begin at all sites. 1150-1148 *SC Antenna is unuseable. No ACU el. encoder. 10223 100 1438 1150 *PT Dew point > air temp. Calc. of index of refraction will be wrong. 1150-1148 *HN 4cm Tsys is 1.4 X LCP 10229 8 115 1150 *LA WEA: Antenna has 3 inches of snow covering the surface. Tsys is high. 1150-1158 *HN Program did not start. Discovered that OTHER 100 8 observ.tx had not been updated on station computer. 1204 %KP Bad readback on drive 2, track 22. All others ok. 1334 All readbacks ok. 1335 HN WEA: Clear and dry. 1402 PT WEA: Overcast, some snow coverage. 1414 FD WEA: Fog. 1448 New operator is Jim Ogle. 1447-1448 *NL site computer rebooted itself. HWC 100 1 1503 KP reports clear skies. 1504 Readbacks okay. 1507 %LA reports foggy conditions, 3" of snow on ground. 1511-1525 *KP site techs need on the antenna briefly. CRYO 100 14 1518 %BR reports overcast low clouds, fog & drizzle. 1550-1552 *HN rotation position error. FRM 100 2 1607 OV reports clear skies. 1620-1622 *HN rotation position error. FRM 100 2 1634 *OV bad readbacks on track 32, drive #1. Other sites okay. 1719-1721 *HN rotation position error. FRM 100 2 1733-1812 *PT site techs need on the antenna. TEST 100 39 1803 Readbacks okay. 1933 Readbacks okay. 2001 MK reports clear skies. 2103 Readbacks okay. 2123 KP reports clear skies. 2140-2143 *HN rotation position error. FRM 100 3 2203 MK reports clear skies. 2210-2212 *HN rotation position error. FRM 100 2 2222-2251 *PT rotation stuck at position of 70.1 - called site, FRM 100 29 techs were able to correct the problem. 2237 New operator: T. Perreault 2353 OV wea: clear, no precipitation 0000 Date is 2002DEC05/339. 0003 BR bad readback drive 2 track 33 All others okay. 0049-1148 %MK dewpoint reading higher than air temperature. 10290 Estimated value of refraction will be off. 0133 FD bad readback drive 1 track 4 All others okay 0146 %BR wea: raining 0303 FD bad readback drive 1 track 4 All others okay 0433 BR bad readback drive 2 track 33 All others okay 0517-0520 *HN subreflector out of position in ROTATION FRM 100 3 Did a MASTER CLEAR and repositioned subreflector 0602 Readback check okay 0645 New operator is Paul Dyer. 0731 All readbacks ok. 0740 MK Dew point suddenly dropped to a realistic value. 0901 %OV Bad readback on drive 1, track 32. All others ok. 1031 All readbacks ok. 1116 MK End of file. 1119-1125 *PT Autostowed. Power glitch. COM 100 6 1148 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