VS06A1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 13-09-2004
 

Summary
 
Observation code : VS06A1    AIPS Version : 31DEC03   
Date of Observation : 2002/50    Difmap Version : 2.4a 
Source Name : J0525-45    vsop_difmap used : No 
Calibration Source(s) : J0403-36         
Ground telescopes : MP HO HH  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : No 
Correlator : Penticton         

 
Abstract
Overlapping GRT and space baselines allow me to deduce that this is a failure.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.653340 0.00000 0.00000 0.869196 1.00000 0.00000 0.0422
(*) 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 
 Full range searched 
SNEDT/SNCOR/CLCAL ante 4;opc zdel/zrat/zphs;interp
   'ambg';opc 'calp';refa 2
2 
4 
3 
5 
  
KRING cparm 0.5,0,0,-1,0;dofit
    4;solint 5/10;solm
   'rd'/''
3 
 
 
6,7 
 Nuffin 
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
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
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_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
POSSM.PS
VPLOT.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? No
Comments on Difmap processing
GRTs and space baselines overlap. The flux would be 0.2 Jy so fringes should have been found. Therefore the experiment is a failure.

Selfcaled on 5 minutes which left little data. A gaussian is a good model fit to that.

Hobart is very unstable.

VS06A2 also failed to find space fringes. Worrying.

Modelfit
Ampl, Phase vs (u,v) Distance
PS (23 kb)
JPEG (33 kb)
 Ampl, Phase vs Time
PS (120 kb)
JPEG 1, 2		 (u,v) Coverage
PS (12 kb)
JPEG (24 kb)
Closure Phase vs Time
PS (98 kb)
JPEG 1		 Image with model components
PS (39 kb)
JPEG (44 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)
0.653340 0.00000 0.00000 0.869196 1.00000 0.00000 0.0422
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Tue Sep 14 07:03:17 GMT 2004
by db_results.pl version 0.3.