VS06J Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 02-09-2004
 

Summary
 
Observation code : VS06J    AIPS Version : 31DEC03   
Date of Observation : 2002/149    Difmap Version : 2.3c 
Source Name : J2357-53    vsop_difmap used : Yes 
Calibration Source(s) : J0303-62         
Ground telescopes : HO HH MP  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
Space fringes to a resolving source.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.696541 0.00000 0.00000 0.293074 1.00000 0.00000 0.3957
0.199700 1.62531 -135.337 0.968285 1.00000 161.970 0.0104
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


AIPS Data Reduction Notes
 
Task
Adverbs
CL
in
SN
in
CL
out
SN
out
Comments
FITLD clint = 0.25
digicor = -1
delcorr = -1
 
 
 
 
  
INDXR cparm = 0, 0, 0.25;
 
 
1 
 
  
ANTAB infile='antab.txt'
 
 
 
 
  
APCAL
 
 
 
1 
  
CLCAL refant=1;
1 
1 
2 
 
 Amplitude calibration solutions applied. XX as ref 
FRING docal -1; dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15,10
 
 
 
2,3,4,5 
  
FRING solint 10;flagv 1;refa 3;search
   2;aparm(5) 1;aparm(9) 1;
 
 
 
6,7 
 flagv mopra off source. Then combine IFs 
CLCAL refant=3;
2 
6 
3 
 
  
FRING dparm 2,20,20,0.5,0;aparm(7)=0.1;aparm(5)
   0;dparm(7)=0/1
3 
 
 
7,8 
  
SNEDT/CLCAL refant=1;
3 
8 
4 
9 
  
CALIB refa 2;solm 'p';aparm 2 0
   0 0 1 1 0;solint 5/2
4 
 
 
10,11 
 Av within IF 
CLCAL
4 
11 
5 
 
  
SPLIT aparm(1)=2 0;
5 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap amplitude 

AIPS Input Files
ANTAB.TXT Comments
used nominal_tsys.pl

AIPS Output Files
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
VPLOT.PS
POSSM.PS
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_FRING02_DEL_1.PS
SN_FRING02_DEL_2.PS
SN_FRING02_RAT_1.PS
SN_FRING02_RAT_2.PS
SN_FRING02_SNR_1.PS		 SN_FRING02_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


Difmap Data Reduction Notes
Phase selfcal applied? Yes
Global amplitude selfcal (gscal) applied? No
Amplitude selfcal on non-global timescales used? No
Modelfit made and saved? Yes
Image Made and saved? Yes
Comments on Difmap processing
Selfcalled uptil 3 min (As calib was same order). Final model included an extended component to the SE, as it improves the closure.

Added the same component to the cleaned image, as cleaning could not address this poorly sampled broad scale component and the shortest baselines fell short.

Image
Ampl, Phase vs (u,v) Distance
PS (35 kb)
JPEG (39 kb)
 Ampl, Phase vs Time
PS (124 kb)
JPEG 1, 2		 (u,v) Coverage
PS (20 kb)
JPEG (26 kb)
Closure Phase vs Time
PS (97 kb)
JPEG 1		 Clean Image
PS (33 kb)
JPEG (47 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (36 kb)
JPEG (39 kb)
 Ampl, Phase vs Time
PS (125 kb)
JPEG 1, 2		 (u,v) Coverage
PS (20 kb)
JPEG (26 kb)
Closure Phase vs Time
PS (97 kb)
JPEG 1		 Image with model components
PS (34 kb)
JPEG (39 kb)

More details on the Images and Modelfits are found in this page.

Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.696541 0.00000 0.00000 0.293074 1.00000 0.00000 0.3957
0.199700 1.62531 -135.337 0.968285 1.00000 161.970 0.0104
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Mon Sep 6 08:52:19 GMT 2004
by db_results.pl version 0.3.