VS04S1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 01-08-2003
 

Summary
 
Observation code : VS04S1    AIPS Version : 31DEC03   
Date of Observation : 2002/336    Difmap Version : 2.4a 
Source Name : J0921-26    vsop_difmap used : No 
Calibration Source(s) : J1215-17, J0811+01         
Ground telescopes : MP HO KA SH  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : No 
Correlator : Penticton         

 
Abstract
Mopra seems to drop out - longer baselines seem fine. No space fringes in the DQA. Pre launch model fits the data (and resolves to VSOP) A not very physical model is fitted.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.0339153 0.395078 173.662 0.0315640 1.00000 0.00000 1.6612
1.43259 0.0267116 -21.1923 1.31824 4.71309e-09 -81.6516 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 
 
 Amplitude calibration solutions applied. Hob as ref 
FRING docal -1; dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
2,3,4 
 No VSOP 
TACOP/SNCOR/SNSMO
 
4 
 
5 
 copy,zero VSOP,smooth others 
CLCAL refant=1;interp 'cube','ambg'
2 
 
3,4 
5 
  
KRING cparm 1/2,0,0,-1,0
3 
 
 
6 
 no VSOP 
CALIB solint 5;ante -5 0
4 
 
 
7 
  
CLCAL refant=1;interp 'simp'
4 
7 
5 
 
  
SPLIT aparm(1)=2 0;
4 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap 

AIPS Input Files
ANTAB.TXT Comments
- None -

AIPS Output Files
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
VPLOT.PS
POSSM.PS
UVPLT_UVD.PS
UVPLT_UVPA.PS
UVPLT_UV.PS
SN_ACCOR_AMP_1.PS		 SN_ACCOR_AMP_2.PS
SN_APCAL_AMP_1.PS
SN_APCAL_AMP_2.PS
SN_CALIB_DEL_1.PS
SN_CALIB_DEL_2.PS
SN_CALIB_PHA_1.PS
SN_CALIB_PHA_2.PS
SN_CALIB_RAT_1.PS
SN_CALIB_RAT_2.PS
SN_CALIB_SNR_1.PS		 SN_CALIB_SNR_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


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
Fits pre-launch model. Tough to get a model to fit nicely to only the GRT baselines, where it tends towards a point source. Including the space baselines improves this, but there is not discrimination against the size of the elliptical Gaussian which is the core of the source.

Modelfit
Ampl, Phase vs (u,v) Distance
PS (53 kb)
JPEG (44 kb)
 Ampl, Phase vs Time
PS (216 kb)
JPEG 1, 2, 3		 (u,v) Coverage
PS (26 kb)
JPEG (27 kb)
Closure Phase vs Time
PS (269 kb)
JPEG 1, 2		 Image with model components
PS (33 kb)
JPEG (38 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)
0.0339153 0.395078 173.662 0.0315640 1.00000 0.00000 1.6612
1.43259 0.0267116 -21.1923 1.31824 4.71309e-09 -81.6516 0.0000
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Tue Aug 24 07:16:22 GMT 2004
by db_results.pl version 0.3.