VS02S Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 22-09-2005
 

Summary
 
Observation code : VS02S    AIPS Version : 31DEC03   
Date of Observation : 1999/226    Difmap Version : 2.3c 
Source Name : 0234+285    vsop_difmap used : Yes 
Calibration Source(s) : 0300+470, 3C84         
Ground telescopes : Mk Sc Kp Br (Hn Nl La Fd Pt Ov Eb)  Model Fitted to data : Yes 
Tracking Station(s) : Rz Nz    Image made : Yes 
Correlator : Socorro         

 
Abstract
GOT W081A1. Eb down by 20. Space fringes & nice image.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.608034 3.60029 -13.6328 5.60658 0.390880 -13.2124 0.0024
0.701355 0.0303655 -45.8564 0.291845 0.342718 -61.8464 1.1725
0.242477 0.261521 155.874 0 0 0 0.0000
0.0336349 2.61403 128.148 1.46354 3.22960e-09 32.6474 0.0000
(*) 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. 
FRING docal -1; dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
3,4,5 
 Full range searched 
SNEDT/CLCAL refant=1;interp 'ambg'
3 
3 
4 
6 
  
SPLIT aparm(1)=2 0;
4 
 
 
 
 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_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


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
Eb is down by a factor of 20. Eb is in the FITS file, so not an ANTAB error. Flagged.

In the full data set (image_full.par etc) a counter jet is visible. This is gscaled & selfcalled on 1min time scale.

The jet is highly resolved, so images poorly in a 'default' VSOP survey dataset. But, given that, much better than I expected.

Image
Ampl, Phase vs (u,v) Distance
PS (159 kb)
JPEG (56 kb)
 Ampl, Phase vs Time
PS (1146 kb)
JPEG 1, 2, 3, 4, 5, 6, 7		 (u,v) Coverage
PS (81 kb)
JPEG (36 kb)
Closure Phase vs Time
PS (4233 kb)
JPEG 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27		 Clean Image
PS (53 kb)
JPEG (46 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (159 kb)
JPEG (55 kb)
 Ampl, Phase vs Time
PS (1147 kb)
JPEG 1, 2, 3, 4, 5, 6, 7		 (u,v) Coverage
PS (81 kb)
JPEG (36 kb)
Closure Phase vs Time
PS (4229 kb)
JPEG 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27		 Image with model components
PS (54 kb)
JPEG (45 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)
0.608034 3.60029 -13.6328 5.60658 0.390880 -13.2124 0.0024
0.701355 0.0303655 -45.8564 0.291845 0.342718 -61.8464 1.1725
0.242477 0.261521 155.874 0 0 0 0.0000
0.0336349 2.61403 128.148 1.46354 3.22960e-09 32.6474 0.0000
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Mon Sep 26 12:58:17 UTC 2005
by db_results.pl version 0.3.