! ! 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 Overflows have been replaced by -2.0 in the appropriate column and empty !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 13cm !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ! ! ! Seshan25 (Shanghai) at 13cm ! DPFU and POLY values are unknown. ! ! GAIN SH ALTAZ DPFU=1.0,0.0 ! POLY=1.00, 0.00 ! 97-07-24 (JFD: email Huang Xinyong fwd by J.Conway 09/99) ! g=(g0+g1*z+g2*z^2+g3*z^3+g4*z^4)*g_ave ! g_ave=0.34; g0= 9.506E-01; g1= 7.377E-03; g2=-3.262E-04 ! g3= 5.791E-06; g4=-3.608E-08 GAIN SH ALTAZ DPFU=0.34,0.0 POLY= 9.506E-01, 7.377E-03, -3.262E-04, 5.791E-06, -3.608E-08 / ! ! -------------------------------------------------------------------------- ! Tsys Values ! -------------------------------------------------------------------------- ! TSYS SH FT=1.0 TIMEOFF=90 INDEX= 'L1', 'R1' / 333 11:00.13 72.6 76.1 333 11:20.13 78.7 80.8 333 14:35.13 77.3 92.0 333 16:05.13 75.5 82.7 333 16:35.13 75.4 80.3 333 22:10.13 74.5 83.4 333 22:50.13 72.3 78.2 334 03:45.13 74.0 78.5 334 04:45.13 82.8 87.3 334 08:00.13 77.3 84.4 334 08:25.13 102.1 108.2 334 08:50.13 77.7 84.8 334 09:15.13 83.4 88.0 334 09:40.13 81.1 86.9 334 10:35.13 73.9 80.2 334 14:05.13 76.8 81.1 334 16:00.13 73.7 80.2 334 20:35.13 78.3 85.8 334 22:30.13 75.0 77.2 335 00:35.13 74.6 80.9 335 01:35.13 77.2 84.9 335 03:35.13 81.1 80.6 335 05:30.13 74.9 80.3 335 07:25.13 80.2 81.5 335 08:30.13 83.7 88.3 335 23:00.20 -41.8 75.9 335 23:22.55 74.1 79.2 336 00:35.13 74.9 78.4 336 01:40.13 74.2 77.9 336 03:45.13 77.6 83.5 336 05:00.13 78.4 84.2 336 05:25.13 80.4 82.3 336 05:50.13 82.0 84.4 336 06:15.13 83.1 85.9 336 06:40.13 90.0 96.4 336 07:05.13 86.2 88.3 336 07:30.13 87.1 91.4 336 07:55.13 114.3 110.0 336 08:20.13 113.0 119.6 336 08:45.13 83.9 84.9 336 09:10.13 81.2 86.1 336 09:35.13 89.8 100.5 336 10:00.13 87.5 100.9 336 11:25.13 72.4 74.3 336 12:40.13 76.7 76.1 336 14:05.13 76.8 82.4 336 16:10.13 89.0 95.6 336 16:35.13 71.9 72.2 336 17:05.13 73.2 80.0 ! ! Station Comments: ! !333 10:42.15:"this log file included 2 files. one is for s2 controling !333 10:42.15:"pc(tape position number, tape user information....). !333 10:42.15:"the other is for vlba rack controling pc( tsys values). !334 10:37.40:"label is ca-3-005630f-0~3 from ut10h35 to 15h55. !333 10:49.81:" INTAS_00 2000 SHANG_S2 S Sh !333 10:49.81:" S SHANG_S2 AZEL 0.0040 30.0 2 -999.9 999.9 18.0 2 -999.9 999.9 0.0 Sh !333 10:49.81:" Sh SHANG_S2 -2831686.92000 4675733.68100 3275327.68200 !333 10:49.81:" SHANG_S2 020520 !333 10:49.81:" drudg version 001102 compiled under FS 9.4.17 !333 11:22.23:"weather:it's cloudy. !333 12:58.71:"weather:it's cloudy. !333 14:01.60:"weather:it's cloudy. !333 15:04.65:"weather:it's cloudy. !333 16:05.73:"weather:it's cloudy. !333 17:01.85:"weather:it's cloudy. !334 09:21.96:"weather:it's raining. !334 12:45.65:"weather;it's big raining. !334 15:34.71:"weather:it's raining. !334 18:34.91:"weather:it's raining. !334 20:41.75:"weather:it's raining. !336 11:27.11:"weather:it's overcast. !336 15:45.21:"weather:it's fine. !336 16:16.13:"following data were missed because of the antenna trouble: !336 16:16.13:"scan_name 333-1435: 15h33m-15h36m !336 16:16.13:"scan_name 333-2250: 2h48m-2h55m !336 16:16.13:"scan_name 334-2035: 21h32m-21h38m !336 16:16.13:"scan_name 335-0725: 8h05m-8h08m 8m13m-8h15m !336 16:16.13:"scan_name 335-2300: 23h-23h22m20s !336 16:16.13:"following data were missed because of the antenna limit: !336 16:16.13:"scan_name 334-1600: 20h20m-20h30m !336 16:16.13:"scan_name 334-2035: 22h09m-22h25m !336 16:16.13:"scan_name 335-0135: 2h48m-3h30m !336 16:16.13:"scan_name 335-0830: 10h06m-10h25m !336 16:16.13:"scan_name 336-0755: 8h09m30s-8h15m !336 16:16.13:"scan_name 336-1000: 10h29m20s-11h20 !336 16:16.13:"scan_name 336-1000: 10h29m20s-11h20 !336 16:16.13:"scan_name 336-1610: 16h25m-16h30m !336 16:16.13:"scan_name 336-1705: 20h10m15s-20h30m !336 16:19.13:"weather:it's cloudy. !336 16:22.91:"before exp. clock offset=utc(seshan25)-utc(gps)=1.09us. !336 16:23.33:"after exp. clock offset=utc(seshan25)-utc(gps)=1.14us. !336 16:24.10:"the frequency accuracy is +-1X10(-12). !336 20:12.23:"we stoped experiment at ut 20h10m40s(antenna's limit). /