VS05W Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 16-09-2005
 

Summary
 
Observation code : VS05W    AIPS Version : 31DEC03   
Date of Observation : 2002/29    Difmap Version : 2.3c 
Source Name : J0242+11/0239+108    vsop_difmap used : Yes 
Calibration Source(s) : J0204+15         
Ground telescopes : Mp (Ho) Ud Cd Sh Kl  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
Confusing VS05W from Mitaka around. This is a test only! Ceduna and Shanghai flagged but not actually bad. Hobart not flagged, but no signal.

Nice big jet. Is this a known source? No one seems to make a fuss about it.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.0887079 0.175914 73.8558 0 0 0 0.0000
0.211734 0.242104 32.2858 0 0 0 0.0000
0.0582626 1.79372 129.939 0.233254 1.00000 0.00000 0.0523
0.244712 1.31447 107.049 1.46514 1.00000 -172.969 0.0056
(*) 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. 
FRING docal -1; dparm
   2,400,400,0.5,0;aparm(7)=0.1;
solint 5,10,15, flagv -1
 
 
 
2,3,4,5 
 Full range searched 
sNEDT/CLCAL refant=1;
2 
5 
3 
6 
  
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_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: Core component falls by a factor of 2.2, but secondary does not change. Usuda never on source & Hobart bad.

J0242+11: Complex source with large jet. The poor uv coverage (very extended but with the same PA as the jet) makes this a little tough. Sufficient data, however (and for once), to do a reasonable job. Flagged much of low elevation Kalyazin. Applied a gscale (large corrections for Ka). Model fitting pretty awful, as not a simple jet. Using the clean model, and fitting just to core gives model clean_modfit.mod with a 0.29 Jy, 0.14 +-0.1 mas core.

Image
Ampl, Phase vs (u,v) Distance
PS (117 kb)
JPEG (53 kb)
 Ampl, Phase vs Time
PS (457 kb)
JPEG 1, 2, 3, 4		 (u,v) Coverage
PS (60 kb)
JPEG (33 kb)
Closure Phase vs Time
PS (830 kb)
JPEG 1, 2, 3, 4		 Clean Image
PS (37 kb)
JPEG (47 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (117 kb)
JPEG (54 kb)
 Ampl, Phase vs Time
PS (456 kb)
JPEG 1, 2, 3, 4		 (u,v) Coverage
PS (60 kb)
JPEG (33 kb)
Closure Phase vs Time
PS (830 kb)
JPEG 1, 2, 3, 4		 Image with model components
PS (36 kb)
JPEG (41 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)
0.0887079 0.175914 73.8558 0 0 0 0.0000
0.211734 0.242104 32.2858 0 0 0 0.0000
0.0582626 1.79372 129.939 0.233254 1.00000 0.00000 0.0523
0.244712 1.31447 107.049 1.46514 1.00000 -172.969 0.0056
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Mon Sep 19 14:36:55 UTC 2005
by db_results.pl version 0.3.