VS07D Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 01-09-2005
 

Summary
 
Observation code : VS07D    AIPS Version : 31DEC03   
Date of Observation : 1997/298    Difmap Version : 2.3c 
Source Name : J2011-1546    vsop_difmap used : Yes 
Calibration Source(s) :          
Ground telescopes : UD HH HO  Model Fitted to data : Yes 
Tracking Station(s) : RZ    Image made : Yes 
Correlator : Mitaka         

 
Abstract
Space fringes after 13UT.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.972960 0.0810720 -177.414 0.926345 0.235080 10.1087 0.2354
(*) 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 
  
ACCOR solint 5
 
 
 
2 
  
CLCAL refant=1;
1 
1,2 
2,3 
 
 Amplitude calibration solutions applied. 
CLCOR opcode 'gain';antenna 0;clcorprm
   1.063,0
3 
 
3 
 
  
FRING docal -1; dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
3,4,5 
 Full range searched 
TACOP/SNCOR ante 4;opc
   'zphs'/'zrat'/'zdel'
 
5 
 
6,9 
 Zero VSOP for a search 
CLCAL refant=1;
3 
6 
4 
 
  
FRING dparm 2,0,0,0.5,0;aparm(7)=0.1;solint
   5;dofit 4/0
4 
 
 
7,8 
 Search the widest windows 
CLCOR opc 'sbdl';ante 4;clcorprm
    -38;timer 0 13 0 0,0 13 30
   0
clcorprm 155;timer 0 13 30
   0 0 14 0
4 
 
4 
 
 Correct where fringes are found. 
FRING dparm 2,50/200,200,0.5,0;solint
   5;refa 2/1
4 
 
 
10,11,12 
 More tweeking of solutions. 
CLCAL refant=1;
4 
11,12 
5,6 
 
 The first looks better 
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
DTSUM_1.LIS
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
VPLOT.PS
POSSM.PS
UVPLT_UV.PS
UVPLT_UVD.PS
UVPLT_UVPA.PS
SN_ACCOR_AMP_1.PS		 SN_ACCOR_AMP_2.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
IMAGE.FITS
WITH_RESOLVED_IMAGE.FITS


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
Simple model, and image, which matches the PLS one. Slightly resolved. Used a 2 min selfcal solution interval.

Image
Ampl, Phase vs (u,v) Distance
PS (32 kb)
JPEG (43 kb)
 Ampl, Phase vs Time
PS (129 kb)
JPEG 1, 2		 (u,v) Coverage
PS (17 kb)
JPEG (26 kb)
Closure Phase vs Time
PS (98 kb)
JPEG 1		 Clean Image
PS (32 kb)
JPEG (44 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (32 kb)
JPEG (42 kb)
 Ampl, Phase vs Time
PS (130 kb)
JPEG 1, 2		 (u,v) Coverage
PS (17 kb)
JPEG (26 kb)
Closure Phase vs Time
PS (98 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)
0.972960 0.0810720 -177.414 0.926345 0.235080 10.1087 0.2354
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Fri Sep 2 10:18:05 UTC 2005
by db_results.pl version 0.3.