VS04L Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 08-09-2005
 

Summary
 
Observation code : VS04L    AIPS Version : 31DEC03   
Date of Observation : 2002/33    Difmap Version : 2.3c 
Source Name : J0231+13    vsop_difmap used : Yes 
Calibration Source(s) : J0204+15, J0423-01         
Ground telescopes : CD HO MP SH (UD KL)  Model Fitted to data : Yes 
Tracking Station(s) : TZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
space fringes. Ud and Kl no good.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
1.02045 0.0167324 -76.0778 0.419518 1.00000 163.511 0.2830
0.137676 1.35852 23.1033 0.345404 1.00000 -153.741 0.0563
(*) 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. 
TACOP/CLCOR opcode 'sbdl';antenna 6;
clcorprm 700;timer 0 7 0
   0 0 8 15 0
clcorprm -500;timer 0 8 15
   0 0 8 30
clcorprm 700;timer 0 7 0
   0 0 8 20 0
clcorprm -500;timer 0 8 20
   0 0 8 30
2 
 
3,5 
 
 Correct the jumps - but no solutions from this time in the end. Flagged in the flag table. FLAGV -1 fixed this. Also explored 8:15 or 8:20 being better 
FRING docal -1; dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
2,3,4,5,7,8,9 
 Full range searched 
SNEDT/CLCAL refant=4;
3 
5 
4 
6 
 The 8:15 version 
SNEDT/CLCAL refant=4;
5 
9 
6 
10 
 the 8:20 version 
SPLIT aparm(1)=2 0;
4 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap 

AIPS Input Files
ANTAB.TXT Comments
used nominal_tsys.pl

AIPS Output Files
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
VPLOT.PS
POSSM.PS
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


Difmap Data Reduction Notes
Phase selfcal applied? Yes
Global amplitude selfcal (gscal) applied? Yes
Amplitude selfcal on non-global timescales used? No
Modelfit made and saved? Yes
Image Made and saved? Yes
Comments on Difmap processing
J0204+15: Ud very low w.r.t. PLS model. J0423-01: Kl low and looks to need ~ 3 to be brought in line to the PLS.

J0231+13: Kl has a nasty oscillation in amplitude (deleted). Ud very low (deleted). The modelfitting has a component in the correct direction, but the cleaned image is less clear -- it is clearly an extended feature in the general area.

Image
Ampl, Phase vs (u,v) Distance
PS (85 kb)
JPEG (46 kb)
 Ampl, Phase vs Time
PS (370 kb)
JPEG 1, 2, 3, 4		 (u,v) Coverage
PS (45 kb)
JPEG (27 kb)
Closure Phase vs Time
PS (662 kb)
JPEG 1, 2, 3, 4		 Clean Image
PS (35 kb)
JPEG (47 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (85 kb)
JPEG (46 kb)
 Ampl, Phase vs Time
PS (371 kb)
JPEG 1, 2, 3, 4		 (u,v) Coverage
PS (44 kb)
JPEG (27 kb)
Closure Phase vs Time
PS (662 kb)
JPEG 1, 2, 3, 4		 Image with model components
PS (34 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)
1.02045 0.0167324 -76.0778 0.419518 1.00000 163.511 0.2830
0.137676 1.35852 23.1033 0.345404 1.00000 -153.741 0.0563
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Mon Sep 12 11:29:47 UTC 2005
by db_results.pl version 0.3.