From observe@banshee.VLA.NRAO.EDU Sat Feb 3 04:23:21 1996 X-Sender: observe@banshee.vla.nrao.edu (Unverified) Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="============_-1388775916==_============" Date: Sat, 3 Feb 1996 11:23:27 +0000 To: pdiamond@nrao.edu From: observe@banshee.VLA.NRAO.EDU (VLA Operators) Subject: First part of BD27B observe log Cc: vlbiobs@nrao.edu Content-Length: 6785 --============_-1388775916==_============ Content-Type: text/plain; charset="us-ascii" --============_-1388775916==_============ Content-Type: text/plain; name="BD27B_96Feb02_427.Text"; charset="us-ascii" Content-Disposition: attachment; filename="BD27B_96Feb02_427.Text" ************************************************************************ Program: BD27B Subarray: #2 Observer: P. Diamond Operator: K. Malolepszy & T. Perreault Date: Friday, Feb 2 1996 Configuration: BC User Number: 600 Decommissioned: 21 Source File: 824BD27C VLBI Ref. Ant: 27 Observe Mode: Single Dish VLB Antenna Pad: BN2 ** Weather Information ** Time Dew Point Temp. Wind Bar. Pressure 96Feb02 20:07:27 -4.6C 6.5C NW 7 m/s 782mbars 96Feb02 22:58:29 -4.7C 8.4C NW at 10.5 m/sec 781mbars 96Feb03 02:33:40 -1.5C 2.6C W at 4.5 m/sec 783mbars 96Feb03 06:50:10 -0.1C 2C NW @ 3.3 m/s 786.3mbars 96Feb03 08:56:38 -1.8C 0.3C NW @ 3.9 m/s 787.2mbars Remarks: Operator comments for the above weather entries. Sky Cover is 90%. Stratusform type. Sky Cover is 70%. Cumuloform type. Sky Cover is 50%. Stratusform type. Sky Cover is 100%. Stratusform type. Snow Flurries Sky Cover is 100%. Stratusform type. ** Visibility Tape Information ** Tape # File # Time of Final Record: N6976 1 ** Monitor Tape Information ** Tape # File # Time of Final Record: N6980 1 96Feb03 at 0:00:00 N6980 2 Antenna(s) Used: 27 ** Operator Comments ** 96Feb02 20:03:16 Starting program: BD27B, observe file: 824BD27C. 96Feb02 20:10:05 On source 3C454 with all available antennas. The band(s) used is(are) C band(s). 96Feb02 20:03:16 The on-line baseline parameters for antenna(s) 5 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. 96Feb02 20:03:16 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 96Feb02 20:10:05 First VLB tape (VLBA0122 2615) mounted and taking data at this time. 96Feb02 21:09:51 Ran a backup on the Modcomp partition where observe files are kept. 96Feb02 22:00:00 Form #: Other # of Ants: Downtime: Antenna(s) 27 - MECHANICAL (Mechanical Structural Elements) Problem(s); Antenna is occasionally expereiencing winds over 5 m/s, causing antenna to go off source at times. Please check your data. Observing Data: Corrupted 96Feb02 22:58:30 **** Larry Brothers is your operator. **** 96Feb02 23:03:04 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 00:03:06 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 01:05:39 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 02:02:52 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 03:03:08 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 04:01:01 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 05:00:48 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 06:02:56 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 06:50:12 **** Dave Thomas is your operator. **** 96Feb03 06:55:00 Snow is falling fairly steadily. Previous operator said it had just begun. If the snow continues I will have to run the SNOW program to remove snow from dishes. 96Feb03 07:00:31 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 07:04:19 Ran a backup on the Modcomp partition where observe files are kept. 96Feb03 08:03:14 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 08:30:44 - 96Feb03 08:54:00 Form #: Weather # of Ants: 1.00 Downtime: 23.27 OTHER (Miscellaneous Equipment) Problem(s); There is sufficient snowfall to run the SNOW program. At least an inch has fallen already, the program will take about 25 minutes to run. Observing Data: Lost 96Feb03 09:00:42 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 10:00:18 The telescope operator made an inspection of the VLB instrumentation. No problems found. 96Feb03 10:01:00 Tape VLBA1057 B674 is taking data on drive 2. 96Feb03 10:25:00 Will be ending this log an beginning a new one since the weather cells are full. 96Feb03 10:25:00 End of program BD27B. Total Downtime = 23.3 minutes (0.1% of total time). AsciiFileOut Version: 1.10 -- Version Date: January 17, 1996 --============_-1388775916==_============--