VS09F Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 05-09-2005
 

Summary
 
Observation code : VS09F    AIPS Version : 31DEC03   
Date of Observation : 2001/339    Difmap Version : 2.3c 
Source Name : J1125+26    vsop_difmap used : Yes 
Calibration Source(s) : J1159+29         
Ground telescopes : (UD) SH MP KL  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : No 
Correlator : Penticton         

 
Abstract
Usuda is no good, Kalyazin is poor. Weak space fringes briefly (16-16:30), but their disappearance looks to be a failure rather than a resolution effect. Very little data to which a gaussian source was fitted.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.267826 0.00000 0.00000 0.609756 1.00000 0.00000 0.0352
(*) 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. 
FRING dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15; refa 1,2,4
 
 
 
2,3,4,5,6,7,8,9,10 
 #10 is best. VSOP fringes are very weak and then are suddenly lost. Looks more like a failure than a resolution. 
SNEDT/CLCAL refant=2;
2 
10 
3 
11 
  
SPLIT aparm(1)=2 0;
3 
 
 
 
 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
VPLOT.PS
POSSM.PS
UVPLT_UV.PS
UVPLT_UVD.PS
UVPLT_UVPA.PS		 SN_APCAL_AMP_1.PS
SN_APCAL_AMP_2.PS
SN_FRING1_DEL_1.PS
SN_FRING1_DEL_2.PS
SN_FRING1_RAT_1.PS
SN_FRING1_RAT_2.PS
SN_FRING1_SNR_1.PS
SN_FRING1_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? No
Amplitude selfcal on non-global timescales used? No
Modelfit made and saved? Yes
Image Made and saved? No
Comments on Difmap processing
J1159+29 is only three GRTs. Kalyazin seems very very low by a factor of 20 -- wrong polarisation?

Only has a short time (16 16:30) of very weak single baseline space data & 20:10 to 20:50 of three GRT (no space) data. Kalyazin is poor, but does not look a factor of twenty out. Not enough to image (or even selfcalibrate) but a modelfit of a resolving point source was made.

Modelfit
Ampl, Phase vs (u,v) Distance
PS (29 kb)
JPEG (37 kb)
 Ampl, Phase vs Time
PS (118 kb)
JPEG 1, 2		 (u,v) Coverage
PS (18 kb)
JPEG (28 kb)
Closure Phase vs Time
PS (58 kb)
JPEG 1		 Image with model components
PS (35 kb)
JPEG (40 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)
0.267826 0.00000 0.00000 0.609756 1.00000 0.00000 0.0352
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Tue Sep 6 14:17:12 UTC 2005
by db_results.pl version 0.3.