VS12B Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 14-09-2004
 

Summary
 
Observation code : VS12B    AIPS Version : 31DEC03   
Date of Observation : 2002/21    Difmap Version : 2.4a 
Source Name : J0224+06    vsop_difmap used : No 
Calibration Source(s) : J0204+15         
Ground telescopes : MP HO KA CD SH KL HH  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
Flux on both target and calibrator is down w.r.t. PLS. Space fringes give source extended towards the extended PLS structure.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.323798 0.0174944 163.878 0.384644 1.00000 -176.237 0.1068
0.0291633 0.791026 -62.0015 0.00000 1.00000 0.00000 0.0000
(*) 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 refa 6; dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
2,3,4 
  
UVFLG flagv 2;ante 1;timer 0 12
    47 0;ante 6;timer 0000 0
   6 11 30
ante 3;timer 0
 
 
 
 
 Hobart fails (it this whne the wrong pol was recorded?) 
FRING flagv 2;dparm 2,80,80,0.5,0;aparm(7)=0.1;solint
   5;ante -8 0
 
 
 
5NeWlInEmap{Output CL} : 
  
SNEDT/CLCAL opc 'calp';interp 'ambg'
2 
5 
3 
6 
  
KRING cparm .5,0,0,-1,0;solint
   5;dofit 8
3 
 
 
7 
  
CLCOR ante 8;timer 0 11 59 59 0
   12 47 0;opc 'sbdl'
3 
 
3 
 
 Correct the VSOP delay to allow a tight search 
FRING cparm 2,40,40,0.5,0;solint
   5/10;dofit 8
3 
 
 
8,9 
  
SNEDT/CLCAL
3 
9 
4 
10 
  
CALIB
4 
 
 
11 
  
CALIB
4 
11 
5 
 
  
SPLIT aparm(1)=2 0;
5 
 
 
 
 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_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_FRING02_DEL_1.PS
SN_FRING02_DEL_2.PS
SN_FRING02_RAT_1.PS
SN_FRING02_RAT_2.PS
SN_FRING02_SNR_1.PS
SN_FRING02_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
VPLOT.PS
POSSM.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? Yes
Comments on Difmap processing
Without Kashima & Kalyazin (which have the worst Tsys record) a simpler model is required. Image and Modfit both have an extention in the same direction as the broad structure in the PLS obs.

Image
Ampl, Phase vs (u,v) Distance
PS (75 kb)
JPEG (53 kb)
 Ampl, Phase vs Time
PS (393 kb)
JPEG 1, 2, 3, 4		 (u,v) Coverage
PS (39 kb)
JPEG (30 kb)
Closure Phase vs Time
PS (748 kb)
JPEG 1, 2, 3, 4		 Clean Image
PS (31 kb)
JPEG (46 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (43 kb)
JPEG (51 kb)
 Ampl, Phase vs Time
PS (366 kb)
JPEG 1, 2, 3, 4		 (u,v) Coverage
PS (39 kb)
JPEG (30 kb)
Closure Phase vs Time
PS (723 kb)
JPEG 1, 2, 3, 4		 Image with model components
PS (825 bytes)
JPEG (0 bytes)

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)
0.323798 0.0174944 163.878 0.384644 1.00000 -176.237 0.1068
0.0291633 0.791026 -62.0015 0.00000 1.00000 0.00000 0.0000
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Thu Sep 16 10:09:24 GMT 2004
by db_results.pl version 0.3.