VS05Y1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 03-08-2003
 

Summary
 
Observation code : VS05Y1    AIPS Version : 31DEC03   
Date of Observation : 2002/203    Difmap Version : 2.4a 
Source Name : J0121+04    vsop_difmap used : No 
Calibration Source(s) : J2148+06, J0204+15         
Ground telescopes : NT HH KL (TR)  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : No 
Correlator : Mitaka         

 
Abstract
Kas log says "tape data _may_ _be_ corrupted." No fringes could be found to any of the three sources. Offsets to other sources are relative to the target.

No space fringes. Based on the projected VLBApls data this might be expected.

Gaussian fitted.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.638664 0.00000 0.00000 0.660109 1.00000 0.00000 0.0715
(*) 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
 
 
 
 
 Something a little crazy at the last 6 mins 
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. NT 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
 
 
 
3,4 
 No fringes to Kas or VSOP 
SNCOR/CLCAL ante 3 4 0;opc 'zdel'/'zrat'/'zphs';interp
   'ambg';
3 
4 
4 
 
  
KRING cparm 0.5,0,0,-1,0;dofit
   3 4 0;solint 5/15
4 
 
 
5,6 
 Kas log "tape data _may_ _be_ corrupted." 
SPLIT aparm(1)=2 0;
4 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap 

AIPS Input Files
ANTAB.TXT Comments
- None -

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_2.PS
SN_APCAL_AMP_1.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? No
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
Gaussian fitted on the assumption that the space baselines are resolved, not broken.

VLBApls model does not fit well - the flux does vary considerably.

Modelfit
Ampl, Phase vs (u,v) Distance
PS (36 kb)
JPEG (42 kb)
 Ampl, Phase vs Time
PS (134 kb)
JPEG 1, 2		 (u,v) Coverage
PS (19 kb)
JPEG (27 kb)
Closure Phase vs Time
PS (97 kb)
JPEG 1		 Image with model components
PS (31 kb)
JPEG (37 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)
0.638664 0.00000 0.00000 0.660109 1.00000 0.00000 0.0715
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Fri Aug 6 10:48:24 GMT 2004
by db_results.pl version 0.3.