! ! EVN Calibration Information File - To be used with the AIPS ANTAB program ! ! Experiment : VS08I ! Date(s) : ! Wavelength : ! Stations : Tr ! 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 and INDEX lines in this ! file for the other frequencies. ! ! Compiled by Cormac Reynolds (reynolds@jive.nl) Tue 07 Aug 2001 ! Version: newantab.pl - 6 Aug 2001 ! ! 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 Overflows have been replaced by -2 in the appropriate column and empty ! columns by -3. 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 a brief description. ! ! 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. ! ! Global VLBI Experiments Correlated at Socorro ! --------------------------------------------- ! ! Global experiments correlated at Socorro may have the TSYS and GAIN ! information for the Effelsberg antenna (EB) transferred automatically with ! the data in a format suitable for use with the AIPS task APCAL (in the same ! way as the VLBA antennas). If this is the case then the TSYS and GAIN entries ! for EB should be removed from this file before running ANTAB. ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! ! PIs should carefully check TSYS values for obvious errors. ! ! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! ! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !GAINS at 6cm !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! ! Torun 32m antenna at 6cm. ! GAIN TR ALTAZ DPFU=0.15,0.15 ! JFD (11/99 POLY=1.00,-1.0825E-4,-8.377E-7,-5.491E-8 / ! ! -------------------------------------------------------------------------- ! Tsys Values ! -------------------------------------------------------------------------- ! TSYS TR FT=1.0 TIMEOFF=90 INDEX= 'L1', 'L2' / !L1: lo=4000.00 MHz, bbc03=800.00 MHz, BW=16.000 MHz !L2: lo=4000.00 MHz, bbc04=816.00 MHz, BW=16.000 MHz 172 11:00.01 49.0 50.1 172 11:10.01 50.4 51.3 172 11:25.01 51.7 58.2 172 11:48.01 49.5 57.0 172 12:11.01 47.6 46.9 172 12:34.01 48.8 50.2 172 12:57.01 47.9 48.4 172 13:20.01 52.0 51.7 172 13:43.01 55.6 57.0 172 14:06.01 58.8 60.2 172 14:29.01 47.3 48.3 172 14:52.01 49.5 53.9 172 15:15.01 101.3 110.6 172 15:22.01 71.8 72.4 ! ! Station Comments: ! !172 10:30.63:" vs08i 2001 TORUN T Tr !172 10:30.63:" T TORUN AZEL 0.0000 22.0 2 -999.9 999.9 12.5 2 -999.9 999.9 0.0 Tr !172 10:30.63:" Tr TORUN 3638558.00000 1221967.00000 5077041.00000 !172 10:30.63:" TORUN 1417600 !172 10:30.63:" drudg version 001211 compiled under FS 9.4.18 !172 10:30.63:" !172 10:30.63:" Remarks from Kaz (the Tr VLBI Friend): !172 10:30.63:" !172 10:30.63:" !!!!!!! BBC 3 and 4 used instead of 1 and 2 !!!!!!! !172 10:30.63:" This is because our formatter produces no or !172 10:30.63:" wrong signall on 1 channel (where BBC1 is). !172 10:30.63:" !172 10:30.63:" At 14:10 UT a short power failure caused a reset !172 10:30.63:" of one of antenna control computers that led !172 10:30.63:" to off source observations till end of this scan. !172 10:30.63:" Clock offset was about -9.5 us (for final value !172 10:30.63:" see the VLBEER server). !172 10:30.63:" Meteo data are given further down this file. !172 10:30.63:" !172 10:30.63:" /