!
! EVN Calibration Information File - To be used with the AIPS ANTAB program
! 
! Experiment : W502A
! Date(s)    : 
! Waveband   : c 
! Stations   : Sh
! Comments   : 
!
! See the file w502a_tsys.ps on vlbeer for a plot of the Tsys in this
! experiment.
!
! 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. If the INDEX lines are different for each frequency
! then you must commenting out the INDEX lines in this file for the other
! frequencies.
!
! Compiled by Cormac Reynolds (reynolds@jive.nl) Wed
! Version: newantab.pl - 23 Apr 2002
!
! 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). The RCP DPFU is specified
! first, followed by a comma, and then the LCP DPFU.
!
! 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 Overflows have been replaced by -2 in the appropriate column and missing
! measurements by -3. These values will be ignored by the AIPS task ANTAB. The
! user should replace any other numbers that they deem inappropriate (very high
! Tsys values) 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.
!
! TIMEOFF
! ----------
!
! In the absence of continuous TSYS measurements, the TIMEOFF keyword can be
! used to incorporate TSYS measurements made before/after the scan. Since ANTAB
! requires that the measurement falls within the scan itself TIMEOFF=90 is
! used. This will displace the measurement by 90 seconds. In the case of short
! scans this number should be lowered so that the measurement falls within the
! scan. Try with lower values until ANTAB recognises the value. Alternatively,
! you may set TIMEOFF to 0 and use the option 'OFFSET' in ANTAB instead to
! increase the effective length of the scans. In many cases - especially when
! there are Tsys at both ends of the scan - this is preferable to using
! TIMEOFF.
!
! 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
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!
!
! Seshan25 (Shanghai) at 6cm 
! last update: Mar 2002 from X. Huang (CR 22Mar02)
!
GAIN SH ALTAZ DPFU=0.0,0.095        FREQ=4000,6000
POLY=9.417E-01,5.585E-03,-1.921E-04,3.140E-06,-1.939E-08
/
!
! --------------------------------------------------------------------------
! Tsys Values
! --------------------------------------------------------------------------
!
TSYS SH FT=1.0 TIMEOFF=0
INDEX= 'L1', 'L2'
/
!Column 1 = L1: lo=4200.00 MHz, bbc01=600.00 MHz, BW=16.000 MHz
!Column 2 = L2: lo=4200.00 MHz, bbc03=616.00 MHz, BW=16.000 MHz
064 06:30.00  43.1  54.8 
064 06:39.00  46.4  59.9 
064 07:30.03  52.1  54.4 
064 08:30.03  46.8  49.3 
064 09:30.03  47.3  48.7 
064 10:30.03  56.1  56.9 
064 11:21.00  56.2  55.2 
!
! Station Comments:
!
!064 04:35.76:"this log file included 2 files. one is for s2 controling
!064 04:35.76:"pc(tape position number, tape user information....).
!064 04:35.76:"the other is for vlba rack controling pc( tsys values).
!064 11:30.63:"
!064 11:30.63:"
!064 05:38.23:" w502a     2002 SHANG_S2  S   Sh 
!064 05:38.23:" S  SHANG_S2 AZEL 0.0040 30.0     2 -999.9 999.9 18.0     2 -999.9 999.9 0.0 Sh      
!064 05:38.23:" Sh SHANG_S2 -2831686.92000  4675733.68100  3275327.68200          
!064 05:38.23:"       SHANG_S2  021660  
!064 05:38.23:"  drudg version 011201 compiled under FS 9.5.3 
!064 05:38.66:"wheather:it's cloudy.
!064 11:30.10:"before exp. clock offset=utc(seshan25)-utc(gps)=20.29us.
!064 11:30.10:"after exp. clock offset=utc(seshan25)-utc(gps)=20.31us.
!064 11:30.10:"the frequency accuracy is 1*10(-12)us.
/