! ! EVN Calibration Information File - To be used with the AIPS ANTAB program ! ! Experiment : ! Date(s) : ! Wavelength : ! Stations : ! Comments : N.B. You should remove from this file any antenna gain curves ! for antennas for which you have no data. ! N.B. Also check that the index lines for each antenna are ! correct for this experiment/data format. ! N.B. If this experiment involves more than one frequency, you ! must run ANTAB once for each frequency, commenting out the gains ! in this file for the other frequencies. ! ! Compiled by Cormac Reynolds (reynolds@jive.nl) ! Version: newantab.pl - October 2000 ! ! Send any changes or updates to the antenna information or queries about this ! file to the email address given above ! ! Polarization ! ------------ ! ! If there is only one polarization available this is indicated by having ! DPFU value 0.0 for RCP (0.0 for LCP for S and X Band). ! ! INDEX Line ! ---------- ! ! It is IMPORTANT to ensure the INDEX lines are correct. By default they are ! arranged such that the IF with the lowest frequency LCP is L1, the lowest ! frequency RCP is R1, etc. If you have any doubts about them, please contact ! the email address above for assistance. ! ! Negative TSYS values: ! ---------------------- ! ! Overflows have been replaced by -2.0 in the appropriate column and empty ! columns by -3.0. The user should replace these numbers and others that they ! deem inappropriate (very high Tsys values and occasional negative numbers) ! with appropriate numbers from adjacent scans or IFs. Some interpolation may ! already have been done by the producer of this file; see the comment line ! above for brief comments. ! ! TIMEOFFSET ! ---------- ! ! The TIMEOFFSET is used as EVN makes the TSYS measurements before the scan. ! Since ANTAB requires that the measurement falls within the scan itself ! TIMEOFFSET=90 is used. This will displace the measurement by 90 seconds. In ! the case of short scans this number should be changed so that the measurement ! falls within the scan (TIMEOFFSET needs to be lowered). Try with lower values ! until ANTAB recognises the value. Alternatively, you may set TIMEOFFSET to 0 ! and use the option 'OFFSET' in ANTAB instead to increase the effective ! length of the scans. ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! ! PIs should carefully check TSYS values for obvious errors. ! ! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! / ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !GAINS at 0.7cm !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! ! -------------------------------------------------------------------------- ! Tsys Values ! -------------------------------------------------------------------------- ! TSYS BL FT=1.0 TIMEOFF=90 INDEX= / ! ! Station Comments: ! !326 09:15.98" Log Opend !326 09:15.98" phcal off !326 09:15.98"location,BEARLAKE !326 09:15.98" BL BEARLAKE 4932681.16800 1321707.93600 3808541.74300 !326 09:15.98"horizon1,0.,10.,360. !326 09:15.98"antenna,64.0,60.0,60.0,0.0,360.0,5.0,110.0,azel !326 09:15.98"LO sum= 1648.00 1664.00 !326 09:15.98"1st LO= 1500.00 1500.00 !326 09:15.98"Net SB= U U !326 09:15.98"Pol. = LCP LCP !326 09:15.98"BBC fr= 148.00 164.00 !326 09:15.98"Bandwd= 16.00 16.00 !326 09:15.98"BBC = 1 3 !326 09:15.98"BBC SB= U U !326 09:15.98"IF = C C !326 09:15.98"equip1,s2 !326 09:15.98"Setup group: 2 !326 09:15.98"Total bit rate: 128 !326 09:15.98"Sample rate: 32.000 !326 09:15.98"Bits per sample: 2 !326 09:15.98" VLBA coding scheme !326 09:15.98"station time correct for UTC: 0.14 usec !326 09:15.98"clk=32MHz !326 09:15.98"track1= 0, 0 !326 09:15.98"barrel=roll_off !326 09:30.00"!!! off source J2151+05 Tracking problem!!! !326 10:05.03"tsysa=78 !326 10:15.03"tsysa=75 !326 10:25.00"!!! off source J2151+05 Tracking problem!!! !326 10:37.50"!!! off source J2151+05 Tracking problem!!! !326 10:45.03"tsysa=73 !326 10:55.03"tsysa=72 !326 10:55.03"!!! off source J2151+05 Tracking problem!!! !326 12:05.03"tsysa=71 !326 12:05.03"!!! off source J2148+06 Tracking problem!!! !326 12:15.03"tsysa=70 !326 12:15.03"!!! off source J2151+05 Tracking problem!!! !326 15:00.00"tsysa=69 / TSYS SH FT=1.0 TIMEOFF=90 INDEX= 'L2', 'L1' / 326 07:00.13 89.1 63.1 326 09:00.16 94.8 60.6 326 09:30.16 90.9 58.9 326 10:06.96 104.9 64.5 326 10:25.13 101.8 62.3 326 10:46.96 96.0 59.4 326 10:55.16 107.2 60.9 326 12:06.96 102.4 69.4 326 12:16.96 89.4 62.4 326 12:40.16 85.3 59.2 326 12:56.96 86.1 57.9 326 14:10.16 92.9 63.8 ! ! Station Comments: ! !326 06:27.78:"this log file included 2 files. one is for s2 controling !326 06:27.78:"pc(tape position number, tape user information....). !326 06:27.78:"the other is for vlba rack controling pc( tsys values). !326 15:00.60:" !326 15:00.60:" !326 06:24.43:" w330z 2000 SHANG_S2 S Sh !326 06:24.43:" S SHANG_S2 AZEL 0.0040 30.0 2 -999.9 999.9 18.0 2 -999.9 999.9 0.0 Sh !326 06:24.43:" Sh SHANG_S2 -2831686.92000 4675733.68100 3275327.68200 !326 06:24.43:" SHANG_S2 021660 !326 06:24.43:" drudg version 000622 compiled under FS 9.4.15 !326 06:54.78:"weather:it's cloudy. !326 11:51.01:"before exp. the clock offset=utc(Seshan)-utc(GPS)=2.19 us !326 11:51.28:"after exp. the clock offset=utc(Seshan)-utc(GPS)=2.20 us !326 11:51.88:"the frequency accuracy is +-1*10(-12) S. !326 12:07.78:"weather:it'cloudy. !326 12:08.96:"weather:it's cloudy. !326 13:19.66:"weather:it's cloudy. /