VS08S1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 27-08-2004
 

Summary
 
Observation code : VS08S1    AIPS Version : 31DEC03   
Date of Observation : 2003/270    Difmap Version : 2.4a 
Source Name : J1726-64    vsop_difmap used : No 
Calibration Source(s) : J1617-77         
Ground telescopes : HH HO  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : No 
Correlator : Mitaka         

 
Abstract
weak fringes between Hobart and Harts in the DQA. Weak source on these baselines maybe be detectable. Nothing on the space baselines. ATCA flux is steady and 1.3 Jy.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.0362322 0.00000 0.00000 0.139395 1.00000 0.00000 0.0910
(*) 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. XX as ref 
CLCOR opcode 'gain';antenna 0;clcorprm
   1.063,0
3 
 
3 
 
  
FRING docal -1; dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15
 
 
 
3,4,5 
 Full range searched 
SNEDT/SNCOR/CLCAL ante 3;opc 'zdel'/zrat/zphs;ante
    0;refant=2;interpo
   'cube'/'ambg'
3 
5 
4/5 
6 
 Zero bad and HALCA values for kring search. Still significant phase variation 
FRING dparm 2,0,0,0.5,0;aparm(7)=0.1;aparm(5)=1;solint
   10
 
 
 
7 
  
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
VPLOT.PS
POSSM.PS
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? No
Modelfit made and saved? Yes
Image Made and saved? No
Comments on Difmap processing
A very weak source maybe in the field, which then resolves to VSOP baselines. There a moments of phased data (which matches the occasional fringes from the FRING/DQA). If I flag agressivily and selfcal on 5 minutes I get a weak source. But would I not have anyway?

Modelfit
Ampl, Phase vs (u,v) Distance
PS (37 kb)
JPEG (48 kb)
 Ampl, Phase vs Time
PS (94 kb)
JPEG 1, 2		 (u,v) Coverage
PS (19 kb)
JPEG (29 kb)
Closure Phase vs Time
PS (53 kb)
JPEG 1		 Image with model components
PS (28 kb)
JPEG (35 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)
0.0362322 0.00000 0.00000 0.139395 1.00000 0.00000 0.0910
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Fri Aug 27 10:48:26 GMT 2004
by db_results.pl version 0.3.