VS08Q Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 05-04-2005
 

Summary
 
Observation code : VS08Q    AIPS Version : 31DEC03   
Date of Observation : 2002/17    Difmap Version : 2.4a 
Source Name : J0105+4819    vsop_difmap used : No 
Calibration Source(s) : J0136+47         
Ground telescopes : UD KL TR  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Socorro         

 
Abstract
Simple compact source. Flux is much lower than that of the PLS. No variability information.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.243840 0.0138342 40.9485 0.221651 1.00000 0.00000 0.2422
(*) 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
 
 
 
5 
  
CLCAL refant=1;
1 
1,5 
2,3 
 
 Amplitude calibration solutions applied. 
FRING docal -1; dparm
   2,400/0,400/200,0.5,0;aparm(7)=0.1;
refa 1,4; solint 5,10,15,5,5
 
 
 
2,3,4,6,7 
 Search. Refa UD better (tho' not full range). 
CLCOR opcode 'sdbl';antenna 3 0;
clcorprm 2000;timer 0 6 0
   0 0 8 10 0
clcorprm 1550;timer 0 8 10
   0 0 23 0
3 
 
3 
 
  
FRING docal 1; dparm
   2,200,200,0.5,0;aparm(7)=0.1;
refa 4,1; solint 5;dparm
   2,100,100
3 
 
 
8,9,10,11 
  
SNEDT/CLCAL interpol 'ambg'/'cube'
3 
11 
4,5 
12 
 No difference 
SPLIT aparm(1)=2 0;
5 
 
 
 
 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
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


Difmap Data Reduction Notes
Phase selfcal applied? Yes
Global amplitude selfcal (gscal) applied? No
Amplitude selfcal on non-global timescales used? Yes
Modelfit made and saved? Yes
Image Made and saved? Yes
Comments on Difmap processing
KL has an oscillation in amplitude. TR is high, even tho the UD-KL, UD-TR baseline are very similar. Rescaled this antenna ONLY.

Only a pretty rough model worked. So went for the simplest which matched the data, a circular Gaussian point source.

Image
Ampl, Phase vs (u,v) Distance
PS (52 kb)
JPEG (47 kb)
 Ampl, Phase vs Time
PS (142 kb)
JPEG 1, 2		 (u,v) Coverage
PS (28 kb)
JPEG (29 kb)
Closure Phase vs Time
PS (98 kb)
JPEG 1		 Clean Image
PS (33 kb)
JPEG (46 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (52 kb)
JPEG (47 kb)
 Ampl, Phase vs Time
PS (142 kb)
JPEG 1, 2		 (u,v) Coverage
PS (28 kb)
JPEG (29 kb)
Closure Phase vs Time
PS (98 kb)
JPEG 1		 Image with model components
PS (34 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)
0.243840 0.0138342 40.9485 0.221651 1.00000 0.00000 0.2422
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Wed Apr 6 09:29:21 GMT 2005
by db_results.pl version 0.3.