VS03N1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 31-07-2004
 

Summary
 
Observation code : VS03N1    AIPS Version : 31DEC03   
Date of Observation : 2002/225    Difmap Version : 2.4a 
Source Name : J1454-3747    vsop_difmap used : No 
Calibration Source(s) :          
Ground telescopes : MP SH  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : No 
Correlator : Penticton         

 
Abstract
Only 1/2 an hour of GRT data was collected. SH Failure.

The are fringes between SH and VSOP. I believe MOP continues to be low (has been out by a factor of 4). In which case a point source could be fitted. It has not.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.0959415 0.00000 0.00000 0 0 0 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 
  
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 
FRING dparm 2,0,50,50.5,0;aparm(7)=0.1;solint
   5
 
 
 
6 
 only sols are 6 6:30 
FRING timer 0 6 0 0 0 8 0;aparm(5)=0/1;solint
   5
 
 
 
7,8 
 short range 
SNEDT/SNCOR/CLCAL refant=2;opc 'zdel/zrat/zphs';interp
   'poly'
2 
8 
3 
9 
 Phase from SH to VSOP/MOP till 6:30. Note jumps in time mentioned in log file. Could be whole seconds? 
FRING timer 0/timer 0 4 0 0 0 6
   0;dparm 2 0 100/0 0.5 0
 
 
 
10,12 
 No subsequent fringes (narrow rate range), no fringes MOP-VSOP 
CALIB refant=1;timer 0 4 0 0 0
   6 30 0
3 
 
 
11 
 zero the VSOP phases 
CLCAL refant=1;
3 
11 
4 
 
  
KRING timer 0 6 0 0 0 6 30;
4 
 
 
13,14,15,16 
 The split data looks to have flux on VSOP baselines to Shanghi, so have a bloody good look 
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 From SH log The hydrogen clock jumped two time during this experiment. Once is between UT:6:00 and 7:00. another is between UT:7:00 and 8:00. The average value of the work clock compare with gps is following: clock offset=utc(seshan25)-utc(gps)=25.595us at UT: 6:00. clock offset=utc(seshan25)-utc(gps)=317.355us at UT: 7:00. clock offset=utc(seshan25)-utc(gps)=638.480us at UT: 8:00. clock offset=utc(seshan25)-utc(gps)=638.522us at UT: 9:00.

AIPS Output Files
DTSUM_0.LIS
DTSUM_1.LIS
LISTR.LIS
PRTAN.LIS
POSSM.PS
SN_APCAL_AMP_1.PS
SN_APCAL_AMP_2.PS
SN_CALIB_DEL_1.PS
SN_CALIB_DEL_2.PS
SN_CALIB_PHA_1.PS
UVPLT_UV.PS		 SN_CALIB_PHA_2.PS
SN_CALIB_RAT_1.PS
SN_CALIB_RAT_2.PS
SN_CALIB_SNR_1.PS
SN_CALIB_SNR_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
UVPLT_UVD.PS
UVPLT_UVPA.PS
VPLOT.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
selfcalled on 30 sec timescale. Yuch.

Modelfit
Ampl, Phase vs (u,v) Distance
PS (16 kb)
JPEG (34 kb)
 Ampl, Phase vs Time
PS (68 kb)
JPEG 1, 2		 (u,v) Coverage
PS (8 kb)
JPEG (21 kb)
Closure Phase vs Time
PS (46 kb)
JPEG 1		 Image with model components
PS (25 kb)
JPEG (34 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)
0.0959415 0.00000 0.00000 0 0 0 0.0000
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Tue Aug 24 08:08:48 GMT 2004
by db_results.pl version 0.3.