VS07V1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 04-03-2003
 

Summary
 
Observation code : VS07V1    AIPS Version : 31DEC03   
Date of Observation : 2002/292    Difmap Version : 2.3c 
Source Name : J1925+21    vsop_difmap used : Yes 
Calibration Source(s) : J1550+05         
Ground telescopes : MP HO UD SH  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
Weak HALCA solutions for the 2nd half of the experiment.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
1.11780 0.0142892 -126.475 0.400335 1.00000 0.00000 0.3404
0.0726989 5.38505 -111.096 0 0 0 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. Mopra as ref 
FRING docal -1; dparm 2,300,300,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
2,3,4 
 Full range searched 
FRING solint 10;ant 1 2 3 4 0
 
 
 
5 
 GRTs 
SNSMO bparm 0 0 0.66 0.66;cparm
    0 0 0.5 0.5 0 0 0 30 10
   10
 
5 
 
6 
  
SNEDT
 
5 
 
7 
  
CLCAL refant=1;opc 'calp'
2 
7 
3 
 
  
CALIB ant 1 2 3 4;solint 10
2 
6 
3 
 
  
FRING solint 5;ant 1 2 3 4 0;refant
   4
 
 
 
8 
 GRTs 
SNSMO bparm 0 0 1/6 1/6;cparm 0
   0 0.5 0.5 0 0 0 5 10
 
8 
 
9 
  
CLCAL refant=4;opc 'calp'; interp
   'ambg'
2 
9 
3 
 
 Tried all combinations. Hobart has poor phase at start. 
CALIB ant 1 2 3 4;solint 3
3 
 
 
10 
  
CLCAL refant=4;opc 'calp'; interp
   ''
3 
10 
4 
 
  
FRING dparm 2,0,0,0.5,0;aparm(7)=0.1;solint
   10;dofit 5
4 
 
 
11 
  
SNSMO bparm 0 0 1/6 1;cparm 0 0
   0.5 0.5 0 0 30 10
 
11 
 
12 
 Smooth the delay heavily 
CLCAL opc '';interp 'ambg'
4 
12 
5 
 
  
CALIB dofit 5;ante -1 0;solint
   3;refa 4
5 
 
 
13 
 Hobart has no real signal 
CLCAL interpo '';opc 'calp'
5 
13 
6 
 
 So to get the cal source as well 
SPLIT aparm(1)=2 0;
6 
 
 
 
 Av within IF. Only the target has valid sols 
FITTP
 
 
 
 
 Data written out for analysis in Difmap 

AIPS Input Files
ANTAB.TXT Comments
- None -

Additional Files
NameDescription
SUR7V1.0JPSurvey 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_1.PS
SN_APCAL_AMP_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
SN_CALIB_DEL_1.PS
VPLOT.PS
POSSM.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


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
Selfcal on a 5 minute timescale.

Used a scalant of 0.72 to Hobart. Alternate solutions are possible, but this requires the minimum changes. This implies a rather unbelievably low Tsys of Hobart.

No variability info, flux at 120 is 0.7, rather than 0.5. Short baselines seem correct. Model agrees with PLS and UNO ones.

Image
Ampl, Phase vs (u,v) Distance
PS (52 kb)
JPEG (44 kb)
 Ampl, Phase vs Time
PS (180 kb)
JPEG 1, 2, 3		 (u,v) Coverage
PS (28 kb)
JPEG (27 kb)
Closure Phase vs Time
PS (242 kb)
JPEG 1, 2		 Clean Image
PS (34 kb)
JPEG (55 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (52 kb)
JPEG (43 kb)
 Ampl, Phase vs Time
PS (182 kb)
JPEG 1, 2, 3		 (u,v) Coverage
PS (28 kb)
JPEG (27 kb)
Closure Phase vs Time
PS (243 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)
1.11780 0.0142892 -126.475 0.400335 1.00000 0.00000 0.3404
0.0726989 5.38505 -111.096 0 0 0 0.0000
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Fri Aug 27 09:15:42 GMT 2004
by db_results.pl version 0.3.