VS07Y1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 04-09-2004
 

Summary
 
Observation code : VS07Y1    AIPS Version : 31DEC03   
Date of Observation : 2002/69    Difmap Version : 2.3c 
Source Name : J0541-0541    vsop_difmap used : Yes 
Calibration Source(s) : J0423-01,J0530+13         
Ground telescopes : HO MO SH (CD KA)  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
In fact only 3 GRT, and no HALCA. A Guassian source of ~ 1 mas
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.702660 0.00000 0.00000 1.21262 1.00000 0.00000 0.0233
(*) 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 
2,3 
 
 Amplitude calibration solutions applied. XX as ref 
FRING dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
2,3,4 
 Full range searched 
CLCAL interp 'ambg'
2 
2 
3 
 
  
SPLIT aparm(1)=2 0;
3 
 
 
 
 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
DTSUM_1.LIS
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
UVPLT_UV.PS
UVPLT_UVD.PS
UVPLT_UVPA.PS		 SN_APCAL_AMP_2.PS
SN_APCAL_AMP_1.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
POSSM.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? Yes
Image Made and saved? Yes
Comments on Difmap processing
Simple Gaussian seems best fit to data. Only have 3 GRTs after all. Less flux than seen on the PLS.

Cleaned image produces 3 points of cluster, but this can not be reproduced in modelling. The are falling around sidelobes, so that is prob the cause.

Image
Ampl, Phase vs (u,v) Distance
PS (44 kb)
JPEG (35 kb)
 Ampl, Phase vs Time
PS (103 kb)
JPEG 1, 2		 (u,v) Coverage
PS (25 kb)
JPEG (26 kb)
Closure Phase vs Time
PS (50 kb)
JPEG 1		 Clean Image
PS (58 kb)
JPEG (62 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (44 kb)
JPEG (35 kb)
 Ampl, Phase vs Time
PS (103 kb)
JPEG 1, 2		 (u,v) Coverage
PS (25 kb)
JPEG (26 kb)
Closure Phase vs Time
PS (50 kb)
JPEG 1		 Image with model components
PS (46 kb)
JPEG (52 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)
0.702660 0.00000 0.00000 1.21262 1.00000 0.00000 0.0233
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Mon Sep 6 08:53:19 GMT 2004
by db_results.pl version 0.3.