VS01O (VT762) Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 13-09-2005
 

Summary
 
Observation code : VS01O    AIPS Version : 31DEC03   
Date of Observation : 1999/351    Difmap Version : 2.3c 
Source Name : 0528+134    vsop_difmap used : Yes 
Calibration Source(s) : 0552+398         
Ground telescopes : Br Fd Hn Kp La Mk Nl Ov Pt Sc  Model Fitted to data : Yes 
Tracking Station(s) : NZ RZ    Image made : Yes 
Correlator : Socorro         

 
Abstract
Used VT762. space fringes for NZ, weaker ones for RZ. Reproduces the expected structure.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.175845 0.316582 -164.626 0 0 0 0.0000
0.207066 0.403902 -163.009 0.414780 1.00000 126.588 0.0587
1.49856 0.238300 29.8558 1.75724 0.201835 42.1555 0.1173
0.155275 3.54862 22.1611 1.62321 1.00000 131.845 0.0029
(*) 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 
2,3 
 
 Amplitude calibration solutions applied. 
FRING docal -1; dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
3,4,5,6,7 
 Fringes for NZ, maybe for RZ 
SNEDT/CLCAL refant=1;interp 'ambg'/'cube'
3 
7 
4,5 
8 
 Neither interpolation give a good rate at the end. As I have loads of data I will use a short selfcal. 
SPLIT aparm(1)=2 0;
4 
 
 
 
 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
POSSM.PS
VPLOT.PS
UVPLT_UV.PS
UVPLT_UVD.PS
UVPLT_UVPA.PS
SN_ACCOR_AMP_1.PS		 SN_ACCOR_AMP_2.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
IMAGE.FITS


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
0552+398 (J0555+3948) is 30% lower than the PLS survey, but has a similar resolving structure. 5.2 rather than 6.8

0528+134: (J0530+1331). Over excited by the possibilities with this dataset I imaged the full uv coverage to produce clean_1mas_beam. This shows the core and bending jet. Even with 4 GRTs and cleaning I was able to reproduce the same structure to an acceptable degree (using restor 1 to enforce a circular beam helps the imaging). I used a 30sec selfcal inteval and allowed an amplitude correction. Modeling the complex structure was very difficult - however a good enough fit to the core and some extended structure was possible.

EBF: 02-OCT-2005: Chose a different set of telescopes with additional calibrations.

The small component is <0.15 mas in size and about 0.17 Jy.

Image
Ampl, Phase vs (u,v) Distance
PS (232 kb)
JPEG (45 kb)
 Ampl, Phase vs Time
PS (1075 kb)
JPEG 1, 2, 3, 4, 5, 6		 (u,v) Coverage
PS (118 kb)
JPEG (28 kb)
Closure Phase vs Time
PS (3302 kb)
JPEG 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22		 Clean Image
PS (44 kb)
JPEG (50 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (232 kb)
JPEG (45 kb)
 Ampl, Phase vs Time
PS (1074 kb)
JPEG 1, 2, 3, 4, 5, 6		 (u,v) Coverage
PS (118 kb)
JPEG (28 kb)
Closure Phase vs Time
PS (3299 kb)
JPEG 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22		 Image with model components
PS (42 kb)
JPEG (45 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)
0.175845 0.316582 -164.626 0 0 0 0.0000
0.207066 0.403902 -163.009 0.414780 1.00000 126.588 0.0587
1.49856 0.238300 29.8558 1.75724 0.201835 42.1555 0.1173
0.155275 3.54862 22.1611 1.62321 1.00000 131.845 0.0029
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Sat Oct 8 03:27:43 UTC 2005
by db_results.pl version 0.3.