VS07K1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 04-03-2002
 

Summary
 
Observation code : VS07K1    AIPS Version : 31DEC03   
Date of Observation : 2002/311    Difmap Version : 2.4a 
Source Name : J0927+39    vsop_difmap used : No 
Calibration Source(s) : J0958+47         
Ground telescopes : KA UD  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
Poor orbit solution. only 2 GRTs so a simple gaussian fitted.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
1.61428 0.00206612 -136.402 0.300392 1.00000 0.00000 0.8730
(*) 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. Kashima as ref 
CLCOR opcode 'gain';antenna 0;clcorprm
   1,0
2 
 
2 
 
  
FRING docal -1;flagv -1;dparm
   2,300,300,0.5,0;
aparm(7)=0.1;solint 5,10,15
 
 
 
2,3,4 
 Full range searched 
FRING docal -1;aparm(7)=0;solint
   10;ante 1 2 0
 
 
 
5 
 GRTs only 
FRING dparm 2,250,600,0.5,0;aparm(7)=0.1;solint
   10
 
 
 
6 
 Fast rate at end 
SNEDT
 
6 
 
7 
  
SNSMO bparm 0 0 1/3 1/3 0;cparm
   0 0 0.5 0.5 0 0 0 30 10 0
 
7 
 
8 
  
FRING dparm 2,256,512,0.5,0;aparm(7)=0.1;solint
   5
 
 
 
9 
 Try again with a short time interval 
CLCAL refant=1;interp 'cube'
2 
9 
7 
 
 Tried a number of combinations. This is best 
SPLIT aparm(1)=2 0;
7 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap 

AIPS Input Files
ANTAB.TXT Comments
used nominal_tsys.pl

Additional Files
NameDescription
SUR7K1.0JPSurvey run file

AIPS Output Files
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
VPLOT.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
POSSM.PS
SN_CALIB_PHA_2.PS
IMAGE.FITS


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
Too little data to justify a complex model. Nicely fitted by a single Gaussian. Selfcalled on 1 minute timescale.

Image
Ampl, Phase vs (u,v) Distance
PS (30 kb)
JPEG (37 kb)
 Ampl, Phase vs Time
PS (81 kb)
JPEG 1, 2		 (u,v) Coverage
PS (14 kb)
JPEG (23 kb)
Closure Phase vs Time
PS (50 kb)
JPEG 1		 Clean Image
PS (47 kb)
JPEG (50 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (30 kb)
JPEG (37 kb)
 Ampl, Phase vs Time
PS (81 kb)
JPEG 1, 2		 (u,v) Coverage
PS (14 kb)
JPEG (23 kb)
Closure Phase vs Time
PS (50 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)
1.61428 0.00206612 -136.402 0.300392 1.00000 0.00000 0.8730
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Fri Aug 6 10:31:28 GMT 2004
by db_results.pl version 0.3.