VS11X Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 28-04-2005
 

Summary
 
Observation code : VS11X    AIPS Version : 31DEC03   
Date of Observation : 2001/235    Difmap Version : 2.3c 
Source Name : J0403+2600    vsop_difmap used : Yes 
Calibration Source(s) : J0204+15,J0423-01,J0530+13         
Ground telescopes : MP CD SH (KL)  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
GOT W017c. Space fringes. Complex model -- possibly over complex. No fringes KAL -- none in the DQA1
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.415317 0.0287580 81.0196 0.315252 1.00000 0.00000 0.2039
0.0738769 2.06544 92.5300 1.19306 1.00000 -158.463 0.0025
0.0624596 0.709636 -105.187 0.424993 1.00000 -149.374 0.0169
0.0833274 9.98605 20.8698 1.75380 1.00000 -176.863 0.0013
(*) 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. 
FRING docal -1; dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
2,3,4,5 
 No fringes to KAL. FLAG bad 
SNEDT/CLCAL refant=1;opty 'ambg'
2 
5 
3 
6 
  
SPLIT aparm(1)=2 0;
3 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap amplitude 

AIPS Input Files
ANTAB.TXT
ANTAB.TXT.hand
ANTAB.TXT.auto		 Comments
used nominal_tsys.pl

AIPS Output Files
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
POSSM.PS
UVPLT_UV.PS
UVPLT_UVD.PS
UVPLT_UVPA.PS
SN_APCAL_AMP_1.PS		 SN_APCAL_AMP_2.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.PS


Difmap Data Reduction Notes
Phase selfcal applied? Yes
Global amplitude selfcal (gscal) applied? Yes
Amplitude selfcal on non-global timescales used? No
Modelfit made and saved? Yes
Image Made and saved? Yes
Comments on Difmap processing
Complicated source (see PLS). PLS model makes some sense -- but is made of sources which would resolve. I have created a cleaned image which does okay at reproducing the data, and having emission in the right places. This is with a taper of 0.5,150 (which includes most space baselines).

The modelfitting was guided by the clean flux. 16 free parameters were used.

Image
Ampl, Phase vs (u,v) Distance
PS (65 kb)
JPEG (48 kb)
 Ampl, Phase vs Time
PS (195 kb)
JPEG 1, 2		 (u,v) Coverage
PS (32 kb)
JPEG (28 kb)
Closure Phase vs Time
PS (152 kb)
JPEG 1		 Clean Image
PS (41 kb)
JPEG (44 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (65 kb)
JPEG (48 kb)
 Ampl, Phase vs Time
PS (195 kb)
JPEG 1, 2		 (u,v) Coverage
PS (32 kb)
JPEG (28 kb)
Closure Phase vs Time
PS (152 kb)
JPEG 1		 Image with model components
PS (44 kb)
JPEG (42 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)
0.415317 0.0287580 81.0196 0.315252 1.00000 0.00000 0.2039
0.0738769 2.06544 92.5300 1.19306 1.00000 -158.463 0.0025
0.0624596 0.709636 -105.187 0.424993 1.00000 -149.374 0.0169
0.0833274 9.98605 20.8698 1.75380 1.00000 -176.863 0.0013
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Fri Sep 2 10:10:16 UTC 2005
by db_results.pl version 0.3.