VS01v Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Zhi-Qiang Shen
Date Prepared: 23-10-1999
 

Summary
 
Observation code : VS01v    AIPS Version : 15OCT98 
Date of Observation : 1998/134    Difmap Version : 2.3c 
Source Name : J1424-49    vsop_difmap used : Yes 
Calibration Source(s) : 1424-418         
Ground telescopes : HartRAO, Seshan25  Model Fitted to data : No 
Tracking Station(s) : GZ,NZ    Image made : No 
Correlator : Penticton         

 
Abstract
This is a 2 GRTs experiment. Fringes were found on ground baseline (HartRAO -- Seshan25) only on IF2, and only during the last 6-8 minutes of the 15 minutes calibrator observations of 1424-418.

A re-scheduling is definitely needed!


AIPS Data Reduction Notes
 
Task
Adverbs
CL
in
SN
in
CL
out
SN
out
Comments
FITLD douvcomp=1;dotable=1
 
 
 
 
 load the uv FITS data into AIPS 
MSORT sort='TB'
 
 
 
 
 sort the data to 'TB' order 
INDXR cparm(3)=1
 
 
1 
 
 index uv data with 1 min CL entry interval 
TACOP
1 
 
2 
 
 protect original CL1 
ANTAB
 
 
 
 
 determine the Tsys and gain curve (see ANTAB.TXT file). Tsys=95K for Halca. 
APCAL opcode=' '
 
 
 
1 
 generate an amplitude calibration solution table 
CLCAL opcode='CALI'
smotype='ampl'
refant=0
2 
1 
3 
 
 apply amplitude calibration solution 
FRING docalib=1
flagv=-1;solint=4;refant=2
aparm=2,0,0,0,0,1,2,0
dparm=1,0,0,0,1,0
antwt=1,1,30
3 
 
 
3 
 FFT fringe fitting only with an SNR cutoff=2 (hard to see any detections with SNR=3-5!) 
CLCAL opcode='CALP';interpol='ambg';smotype='VLBI';refant=2
cals=sour='J1424-49'
(cals=sour='1424-418')
3 
3 
4 
 
 apply FFT solutions 
FRING docalib=1
flagv=-1;solint=4;refant=2
aparm=2,0,0,0,0,1,3,0
dparm=1,0
antwt=1,1,30
4 
 
 
4 
 try FFT+LLS fringe fitting (no positive detections even with narrow searching windows!) 
CLCAL opcode='CALP';interpol='ambg';smotype='VLBI';refant=2
cals=sour='J1424-49'
(cals=sour='1424-418')
4 
4 
5 
 
 apply FFT solutions 
TACOP
5 
 
6 
 
 save calibration table CL5 
CLCOR antenna=0;opcode='GAIN';clcorprm=0.91,0
6 
 
6 
 
 Penticton gain correction 
TASAV
 
 
 
 
 copy all extension tables to a dummy file 
SPLIT docalib=1;douvcomp=1
flagv=-1;aparm=2,0,0,1,0
6 
 
 
 
 make calibrated single-source data files: J1424-49.SPLIT and 1424-418.SPLIT 

AIPS Input Files
INDXR.TXT
ANTAB.TXT		 Comments
- None -

AIPS Output Files
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
UVPLT_UV.PS
UVPLT_UVD.PS
UVPLT_UVPA.PS
SN_APCAL_AMP_2.PS
SN_APCAL_AMP_1.PS
SN_FRING01_DEL_1.PS		 SN_FRING01_DEL_2.PS
SN_FRING01_RAT_1.PS
SN_FRING01_RAT_2.PS
SN_FRING01_SNR_1.PS
SN_FRING01_SNR_2.PS
SN_CALIB_DEL_1.PS
SN_CALIB_DEL_2.PS
SN_CALIB_RAT_1.PS
SN_CALIB_RAT_2.PS
SN_CALIB_SNR_1.PS		 SN_CALIB_SNR_2.PS
SN_CALIB_PHA_1.PS
SN_CALIB_PHA_2.PS
VPLOT_AP_1.PS
VPLOT_AP_2.PS
POSSM01_AP_2.PS
POSSM01_AP_1.PS


Difmap Data Reduction Notes
Phase selfcal applied? No
Global amplitude selfcal (gscal) applied? No
Amplitude selfcal on non-global timescales used? No
Modelfit made and saved? No
Image Made and saved? No
Comments on Difmap processing



Last updated on Thu Nov 30 01:22:16 GMT 2000
by db_results.pl version 0.3.