vs03l Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Steven Tingay
Date Prepared: 21-06-1999
 

Summary
 
Observation code : vs03l    AIPS Version : 15APR99   
Date of Observation : 1998/053    Difmap Version : 2.3c 
Source Name : J1626-2951    vsop_difmap used : Yes 
Calibration Source(s) :          
Ground telescopes : SC Y MK  Model Fitted to data : Yes 
Tracking Station(s) : TZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
No AIPS plots have been made.

Had problems with the data on tape that was sent from ISAS, only 3/4 files present. Had problems concatenating files and with reconstruction of correct timerange.

The data are good and well calibrated in agreement with the standard procedures set out for the survey.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.278146 0.0521511 111.704 0.358622 0.326620 65.6001 0.3231
0.703700 0.216510 -96.5716 0.734178 0.402761 -81.5059 0.1582
(*) 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 DOCONCAT=-1
 
 
 
 
  
DBCON DOARRAY=1
 
 
 
 
  
APCAL
 
 
 
1 
  
CLCAL
1 
1 
2 
 
  
FRING SOLINT 3
REFANT 3
DPARM 1 6000 500 2 0
APARM 2 0 0 0 0 1 3.5 0
 
 
 
2 
 found ground fringes 
CLCAL
2 
2 
3 
 
  
FRING SOLINT 5
REFANT 3
DPARM 1 200 200 2 0
APARM 2 0 0 0 0 1 3.5 0
 
 
 
3 
 found space fringes 
CLCAL
3 
3 
4 
 
  
FRING
 
 
 
 
 after AVSPC to find weaker fringes 
FRING
 
 
 
 
 after UVAVG to find waeker fringes 
CLCOR
 
 
 
 
 to correct Penticton normalisation 
SPLIT
 
 
 
 
  
FITTP
 
 
 
 
  

AIPS Input Files
ANTAB.TXT Comments
- None -

AIPS Output Files


Difmap Data Reduction Notes
Phase selfcal applied? Yes
Global amplitude selfcal (gscal) applied? Yes
Amplitude selfcal on non-global timescales used? Yes
Modelfit made and saved? Yes
Image Made and saved? Yes
Comments on Difmap processing
structure of source very complex and very difficult to image/modelfit with small number of antennas.

global offsets all less than 20%

Image
Ampl, Phase vs (u,v) Distance
PS (80 kb)
GIF (8 kb)
 Ampl, Phase vs Time
PS (368 kb)
GIF 1, 2		 (u,v) Coverage
PS (42 kb)
GIF (5 kb)
Closure Phase vs Time
PS (207 kb)
GIF 1		 Clean Image
PS (33 kb)
GIF (57 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (80 kb)
GIF (8 kb)
 Ampl, Phase vs Time
PS (368 kb)
GIF 1, 2		 (u,v) Coverage
PS (42 kb)
GIF (5 kb)
Closure Phase vs Time
PS (207 kb)
GIF 1		 Image with model components
PS (34 kb)
GIF (7 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)
0.278146 0.0521511 111.704 0.358622 0.326620 65.6001 0.3231
0.703700 0.216510 -96.5716 0.734178 0.402761 -81.5059 0.1582
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Thu Jun 24 23:22:11 GMT 1999
by db_results.pl version 0.2.0.