VS06V1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 20-04-2003
 

Summary
 
Observation code : VS06V1    AIPS Version : 31DEC03   
Date of Observation : 2002/285    Difmap Version : 2.4a 
Source Name : J1153+80    vsop_difmap used : No 
Calibration Source(s) : J1800+78         
Ground telescopes : KA SH  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : No 
Correlator : Penticton         

 
Abstract
Very weak fringes towards the end. There is no huge baseline length changes. The PLS implies very compact source structure. DQA values are better than AIPS.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.509443 0.232774 -166.081 0.638148 1.00000 0.00000 0.0610
0.0456935 0.411283 -14.7166 0.00000 1.00000 0.00000 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 
  
CLCAL refant=1;
1 
1 
2 
 
 Amplitude calibration solutions applied. Kash as ref 
FRING docal -1; dparm 2,0,0,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
2,3,4 
 Full range searched. No space fringes 
SNEDT/SNCOR ante 3;opc
   'zdel'/'zrat'/'zpha'
 
3 
 
6 
  
CLCAL refant=1;opco '';interp
   'cube'
2 
6 
4 
 
  
KRING cparm 0.5,0,0,-1,0/cparm
   0.5,120,120,-1,0
4 
 
 
7,8 
 A few solutions towards the end? 
SNEDT/SNCOR ante 1 2;opc
   'zdel'/'zrat'/'zpha'
 
8 
 
9 
  
CLCAL refant=1;opco '';interp
   'poly'
4 
9 
5 
 
 Some phases visible 
SPLIT aparm(1)=2 0;
5 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap 

AIPS Input Files
ANTAB.TXT Comments
- None -

AIPS Output Files
DTSUM_0.LIS
DTSUM_1.LIS
LISTR.LIS
PRTAN.LIS
VPLOT.PS
POSSM30.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
UVPLT_UV.PS
UVPLT_UVD.PS
UVPLT_UVPA.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
J1800+78 has a flux of 1.45, lower than the ~ 2+ seen in VLBApls.

1 min phase cal used. This is more than justified, but with the poor rate solutions I have no option.

Modelfit
Ampl, Phase vs (u,v) Distance
PS (29 kb)
JPEG (42 kb)
 Ampl, Phase vs Time
PS (79 kb)
JPEG 1, 2		 (u,v) Coverage
PS (17 kb)
JPEG (27 kb)
Closure Phase vs Time
PS (46 kb)
JPEG 1		 Image with model components
PS (31 kb)
JPEG (37 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)
0.509443 0.232774 -166.081 0.638148 1.00000 0.00000 0.0610
0.0456935 0.411283 -14.7166 0.00000 1.00000 0.00000 0.0000
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Tue Apr 5 11:29:41 GMT 2005
by db_results.pl version 0.3.