VS13D Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 03-03-2003
 

Summary
 
Observation code : VS13D    AIPS Version : 31DEC03   
Date of Observation : 2002/296    Difmap Version : 2.4a 
Source Name : J1955+51    vsop_difmap used : No 
Calibration Source(s) : J1800+78         
Ground telescopes : UD SH  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
Flux observed at the VLBA is twice that seen at UMRAO.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.272606 0.0898089 170.602 0.00000 1.00000 0.00000 0.0000
0.181485 0.273003 -93.0821 0.00000 1.00000 0.00000 0.0000
0.0651566 0.517013 24.9175 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 
  
ACCOR solint 5
 
 
 
2 
  
CLCAL refant=1;
1 
1 
2 
 
 Amplitude calibration solutions applied. Shanghai as ref 
FRING docal -1; dparm 2,200,200,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
3,4,5 
 Full range searched; flagv -1 needed again. 
SNEDT
 
3 
 
6 
  
FRING dparm 2,300,300,0.5,0;aparm(7)=0.1;solint
   10;flagv -1
 
 
 
7 
  
SNEDT
 
7 
 
8 
  
CLCAL interpo 'ambg','cube'
2 
8 
3,7 
 
  
FRING dparm 2,30,30,0.5,0;aparm(7)=0.1;solint
   10;flagv -1
3 
 
 
9 
 narrow range fring 
CALIB solint 5;ante 1 2 0;
3 
 
 
10 
 Solve phase on GRT. Residual variation. 
CLCAL interpo '';opco 'calp';
3 
10 
4 
 
  
CLCAL interpo '';
2 
8 
5 
 
 get an rough solution 
FRING dparm 2,60,60,0.5,0;aparm(7)=0.1;solint
   10;flagv -1
5 
 
 
11 
 narrow range fring 
FRING dparm 2,60,60,0.5,0;aparm(7)=0.1;solint
   10;flagv -1
5 
 
 
11 
 narrow range fring 
SNCOR opco 'zdel';ante 1;opc
   'zrate';
 
11 
 
12 
  
CLCAL interpo 'ambg'
5 
12 
6 
 
  
SPLIT aparm(1)=2 0;
7 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap 

AIPS Input Files
ANTAB.TXT Comments
used nominal_tsys.pl

Additional Files
NameDescription
SUR13D.0JPSurvey run file

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
VPLOT.PS
POSSM.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? Yes
Comments on Difmap processing
phase self-cal over 3 minute time intervals

Image
Ampl, Phase vs (u,v) Distance
PS (24 kb)
JPEG (37 kb)
 Ampl, Phase vs Time
PS (83 kb)
JPEG 1, 2		 (u,v) Coverage
PS (16 kb)
JPEG (25 kb)
Closure Phase vs Time
PS (53 kb)
JPEG 1		 Clean Image
PS (825 bytes)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (24 kb)
JPEG (37 kb)
 Ampl, Phase vs Time
PS (83 kb)
JPEG 1, 2		 (u,v) Coverage
PS (16 kb)
JPEG (25 kb)
Closure Phase vs Time
PS (53 kb)
JPEG 1		 Image with model components
PS (825 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)
0.272606 0.0898089 170.602 0.00000 1.00000 0.00000 0.0000
0.181485 0.273003 -93.0821 0.00000 1.00000 0.00000 0.0000
0.0651566 0.517013 24.9175 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 Fri Aug 6 06:09:06 GMT 2004
by db_results.pl version 0.3.