VS10A1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 09-09-2004
 

Summary
 
Observation code : VS10A1    AIPS Version : 31DEC03   
Date of Observation : 2002/124    Difmap Version : 2.4a 
Source Name : J0842+18    vsop_difmap used : No 
Calibration Source(s) : J0811+01         
Ground telescopes : HH MP KA  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.240553 0.584509 105.555 0.544075 1.00000 -174.874 0.0397
0.200914 0.992682 -86.2054 0.266318 1.00000 -170.662 0.1382
(*) 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 2,600/400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
2,3,4,5 
 Bit more for the last. 
SNEDT/CLCAL refant=3;interp 'poly';intpar
   1/2
2 
5 
3,4 
6 
  
FRING dparm 2,600,100,0.5,0;aparm(7)=0.1;solint
   5;aparm(5)=0/1
3 
 
 
7,8 
  
FRING dparm 2,600/-1,100,0.5,0;aparm(7)=0.1;solint
   5;aparm(5)=0/1
4 
 
 
9,10 
  
CLCAL refant=3;inter 'ambg'/'poly'
4 
11 
5,6 
 
  
FRING dparm 2,-1,10,0.5,0;solint 5
6 
 
 
12 
  
CLCAL refant=3;inter 'ambg'
6 
12 
7 
 
  
UVFLG ante 2;flagv 2;
 
 
 
 
 Kashima often off 
CALIB solint 5/10
7 
 
 
13,14 
  
CLCAL interp 'self'
7 
13,14 
8,9 
 
  
SPLIT aparm(1)=2 0;
8 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap amplitude 

AIPS Input Files
ANTAB.TXT
HISTORY.TXT		 Comments
used nominal_tsys.pl

AIPS Output Files


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
J0811+01 model flux down significantly (a factor of two) from the pre-launch.

Model is a pair of source, which prob resolve slightly, separated EW. But the pre launch (& the 2cm/4cm RFID data) shows a North wards extension. Higher resolution now (separation is ~ 1.5 mas) of course.

corplot.ps from the corrections was made. Longer term on VSOP by holding those values fixed.

Image
Ampl, Phase vs (u,v) Distance
PS (40 kb)
JPEG (47 kb)
 Ampl, Phase vs Time
PS (140 kb)
JPEG 1, 2		 (u,v) Coverage
PS (20 kb)
JPEG (26 kb)
Closure Phase vs Time
PS (110 kb)
JPEG 1		 Clean Image
PS (30 kb)
JPEG (52 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (27 kb)
JPEG (45 kb)
 Ampl, Phase vs Time
PS (129 kb)
JPEG 1, 2		 (u,v) Coverage
PS (20 kb)
JPEG (26 kb)
Closure Phase vs Time
PS (106 kb)
JPEG 1		 Image with model components
PS (825 bytes)
JPEG (0 bytes)

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)
0.240553 0.584509 105.555 0.544075 1.00000 -174.874 0.0397
0.200914 0.992682 -86.2054 0.266318 1.00000 -170.662 0.1382
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Mon Sep 13 12:16:06 GMT 2004
by db_results.pl version 0.3.