VS08K,V053D1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 07-04-2005
 

Summary
 
Observation code : VS08K,V053D1    AIPS Version : 31DEC03   
Date of Observation : 2000/290    Difmap Version : 2.3 
Source Name : J0958+6533    vsop_difmap used : Yes 
Calibration Source(s) : 0836+710,0615+820         
Ground telescopes : SC EB NL FD (LA KP OV BR HN)  Model Fitted to data : Yes 
Tracking Station(s) : RZ (NZ)    Image made : Yes 
Correlator : Socorro         

 
Abstract
Full polarisation, full VLBA. Hard on the machines. MSORT failed. OV bad.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.241917 0.0306840 113.849 0 0 0 0.0000
0.0946596 0.347126 -40.1661 1.02245 0.214764 -39.8456 0.0206
(*) 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 
  
UVSRT
 
 
 
 
 Too big for MSORT 
CLCAL refant=1;
1 
1,2 
2,3 
 
 Amplitude calibration solutions applied. 
TACOP/UVFLG/UVCOP flagv 2;stokes 'rl'/'lr'/'rr'
 
 
 
 
 Just the LL data 
FRING docal -1; dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
2,3,4,5 
 Full range searched. No NZ fringes. (No UZ tracking) 
FRING dparm 2,200,150,0.5,0;aparm(7)=0.1;solint
   5;ant -12
 
 
 
6 
 No NZ or OV 
SNEDT/CLCAL sour=cals '0954+658'/''
3 
6 
4,5 
7 
 #5 better for cal sources. No difference for 0954+658 
SPLIT aparm(1)=2 0;
4 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap amplitude 

AIPS Input Files
ANTAB.TXT Comments
used nominal_tsys.pl

AIPS Output Files
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
UVPLT_UV.PS
UVPLT_UVD.PS
UVPLT_UVPA.PS
SN_ACCOR_AMP_1.PS
SN_ACCOR_AMP_2.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
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
POSSM.PS
VPLOT.PS
IMAGE.FITS


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
The PLS model fits OK if scaled down by about 2.3. It has a broad component which would not be well modelled, although the short baseline coverage in this data set is not too bad.

Imaging gives a compact source, but slightly extended towards the PLS broadscale component.

Modelling gives an eliptical Gaussian extended in the same direction.

EBF:02-OCT-2005

Added in HN for better NS resolution. Made model to contain two component.

A core with <0.1 mas size and a faint component to the NW, as in pls.

Image
Ampl, Phase vs (u,v) Distance
PS (212 kb)
JPEG (56 kb)
 Ampl, Phase vs Time
PS (874 kb)
JPEG 1, 2, 3, 4, 5		 (u,v) Coverage
PS (107 kb)
JPEG (37 kb)
Closure Phase vs Time
PS (2154 kb)
JPEG 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14		 Clean Image
PS (34 kb)
JPEG (44 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (212 kb)
JPEG (55 kb)
 Ampl, Phase vs Time
PS (874 kb)
JPEG 1, 2, 3, 4, 5		 (u,v) Coverage
PS (107 kb)
JPEG (37 kb)
Closure Phase vs Time
PS (2155 kb)
JPEG 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14		 Image with model components
PS (36 kb)
JPEG (39 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)
0.241917 0.0306840 113.849 0 0 0 0.0000
0.0946596 0.347126 -40.1661 1.02245 0.214764 -39.8456 0.0206
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Sat Oct 8 04:45:44 UTC 2005
by db_results.pl version 0.3.