From observe@banshee.VLA.NRAO.EDU Fri Apr 5 08:57:22 1996 X-Sender: observe@banshee.vla.nrao.edu (Unverified) Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="============_-1383402664==_============" Date: Fri, 5 Apr 1996 15:57:40 +0000 To: pdiamond@banshee.VLA.NRAO.EDU, vlbiobs@banshee.VLA.NRAO.EDU From: observe@banshee.VLA.NRAO.EDU (VLA Operators) Subject: bd27 log, part 1 Content-Length: 7426 --============_-1383402664==_============ Content-Type: text/plain; charset="us-ascii" --============_-1383402664==_============ Content-Type: text/plain; name="BD027C_96Apr05_1394.Text"; charset="us-ascii" Content-Disposition: attachment; filename="BD027C_96Apr05_1394.Text" ************************************************************************ Program: BD027C Subarray: #2 Observer: Diamond Operator: Jim Nieri Date: Friday, Apr 5 1996 Configuration: C User Number: 600 Decommissioned: 24 Source File: 887BD27 VLBI Ref. Ant: 27 Observe Mode: Single Dish VLB Antenna Pad: CN4 ** Weather Information ** Time Dew Point Temp. Wind Bar. Pressure 96Apr05 00:03:01 0.4C 5C nnw at 6 m/s 788.3mbars 96Apr05 02:46:29 0.5C 3.9C wsw at 1 m/s 789mbars 96Apr05 07:00:57 0.1C 3.1C ESE @ 3.1 m/s 789mbars 96Apr05 08:23:31 -0.8C 2.9C ESE @ 2.6 m/s 789mbars 96Apr05 09:22:05 -1.6C 2.6C E@ 3.7 m/s 789.3mbars Remarks: Operator comments for the above weather entries. Sky Cover is 100%. Stratusform type. Rain shwrs Sky Cover is 100%. Stratusform type. Rain shwrs Sky Cover is 100%. Stratusform type. Sky Cover is 100%. Stratusform type. Sky Cover is 100%. Stratusform type. ** Visibility Tape Information ** Tape # File # Time of Final Record: N7176 1 96Apr05 at 4:16:09 N7177 1 96Apr05 at 7:52:09 N7178 1 96Apr05 at 12:28:38 N7179 1 ** Monitor Tape Information ** Tape # File # Time of Final Record: N7170 5 Antenna(s) Used: 27 ** Operator Comments ** 96Apr05 00:02:00 Starting program: BD027C, observe file: 887BD27. 96Apr05 00:18:00 On source TXCAM with all available antennas. The band(s) used is(are) Q band(s). 96Apr05 00:02:00 The on-line baseline parameters for antenna(s) 21 have recently been updated (prior to your observing run) to correct for errors resulting from their recent relocations. In the analysis of your data would you please check for any significant baseline errors especially on these antennas and let the Data Analysts (email - analysts@nrao.edu) know what you find when there are significant baseline errors. Thank you in advance. 96Apr05 00:02:00 The Area Frequency Coordinator at White Sands Missile Range (New Mexico, USA) reports airborne electronic jamming which may be occurring now. It is not clear to us how long this activity will last. Cannon, New Mexico (USA) Air Force Base is supposed to let VLA Operations know before activities start. Here are frequencies affected: 1225 - 1270 MHz, 1340 - 1400 MHz, 2200 - 2290 MHz, 2300 - 2400 MHz, 2690 - 2704 MHz, 2714 - 2720 MHz, 2730 - 2735 MHz,2758 - 2880 MHz, 2855 - 2880 MHz, 4800 - 4990 MHz, 4990 - 5000 MHz, 7895 - 8030 MHz, 8030 - 8100 MHz, 8400 - 8500 MHz, 8500 - 8900 MHz, 8900 - 9000 MHz, 13400 - 13900 MHz, 14500 - 15300 MHz, 15400 - 15500 MHz The jamming is authorized at the frequencies listed until Oct 31, 96. If a complaint does occur, we can shut them down, since the authorization specifically says that the jamming can proceed at those frequencies as long as the exercise does not interfere with the VLA. Contact Clint Janes for further information and to make complaints. Clint Janes, VLA Frequency Coordinator/Phillip Hicks, VLA Operations 96Apr05 00:10:00 The real begining of the file was at 00:10:00. The Software group had the system as scheduled. The tape & VME started on time. The first VLBI tape is VLBA0290, 2A49, it is turning. The first source 0420-014 was missed this time around. 96Apr05 01:11:00 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 02:05:00 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 03:00:00 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 04:06:39 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 05:03:29 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 06:03:42 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 07:00:59 **** K. Michael Malolepszy is your operator. **** 96Apr05 07:04:40 Ran a backup on the Modcomp partition where observe files are kept. 96Apr05 07:13:53 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 07:31:00 Form #: Other # of Ants: 0.00 Downtime: VLBA REC (VLBA recorder, formatters & plybk drives) Problem(s); The VLBA operator noticed that the time displayed on the VME OBS-CLOCK differed from the FORMAT-FORMAT by slightly over 1 second. VLBA operator decremented the OBS-CLOCK by one second. Observing Data: Unknown Effect 96Apr05 08:01:13 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 08:16:00 - 96Apr05 09:13:00 Form #: Other # of Ants: 0.00 Downtime: 0.00 IF TRANSMI (IF transmission) Problem(s); CHECKER complains about "clipper levels out of range" for about 30 seconds or so about every 4-5 minutes. Baseband overlay shows nothing unusual, T5 levels look ok. This might be weather related - cloud cover is heavy, possibly raining in area. Observing Data: Unknown Effect 96Apr05 09:02:43 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 10:08:34 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 11:07:47 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 12:04:43 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 12:59:30 - 96Apr05 13:24:00 Form #: Human Error # of Ants: 1.00 Downtime: 24.50 Antenna(s) 27 - OTHER (Miscellaneous) Problem(s); Source is below horizon during this time. Observing Data: Lost 96Apr05 13:02:48 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 14:02:00 Tape VLBA0906 FB24 is mounted and taking data. 96Apr05 14:04:57 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Apr05 14:49:39 **** Larry Brothers is your operator. **** 96Apr05 14:52:00 Continuing this log, weather blocks full. 96Apr05 14:52:00 End of program BD027C. Total Downtime = 24.5 minutes (0.1% of total time). AsciiFileOut Version: 1.10 -- Version Date: January 17, 1996 --============_-1383402664==_============--