VS07P1 Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 26-07-2004
 

Summary
 
Observation code : VS07P1    AIPS Version : 31DEC00   
Date of Observation : 2002/235    Difmap Version : 2.4a 
Source Name : J0321+1221    vsop_difmap used : No 
Calibration Source(s) : J0204+15,J0423-01         
Ground telescopes : HH,NT  Model Fitted to data : Yes 
Tracking Station(s) : UZ    Image made : Yes 
Correlator : Mitaka         

 
Abstract
No IF2 from Noto until 05:30. Data agrees (roughly) with the VLBApls.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.410607 0.00105812 130.166 0.279443 1.00000 0.00000 0.2566
(*) 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. HH as ref 
CLCOR opcode 'gain';antenna 0;clcorprm
   1.13,0
opcode 'sbdl';antenna 3;clcorprm
   100,100,0
2 
 
2 
 
 Correction from DQA (sign swapped). Done before #3 
CLCOR opcode 'gain';antenna 0;clcorprm
   1/sqrt(1.13),0
3 
 
3 
 
 Correction correction 
FRING dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15;refant 2
3,0 
 
 
3,4,5,6,7,8 
 repeated without cal 
UVFLG bif 2;eif 2;timer 0 0 0 0
    0 5 30 0;flagv 1;/ante 1
   0;flagv 2
 
 
 
 
 Flag bad data -- but only NOTO 
FRING dparm 2,400,400,0.5,0;aparm(7)=0.1;solint
   5,10,15;refant 2
3,0 
 
 
3,4,5,6,7,8 
 repeated without cal 
FRING refa 1/2;flagv -1/1/2
 
 
 
9,10,11 
 more searching. 
CLCAL interp 'poly'/'ambg';intpa
   4 0;
3 
10 
4,5 
 
 get the first order solution 
FRING dparm
   2,100,100,0.5,0;aparm(7)=3/0.1;
4 
 
 
12,13,14 
 small search window, different weights, flagv wrong 
FRING dparm 2,400,400,0.5,0;aparm(7)=0.1;refa
   1;aparm(5)=0/1
 
 
 
17,18 
 Hart has no fringes to VSOP. Start again with Noto as the reference, combine the IFs and get a solution. Hart (or Noto -- looks like Noto) has 10ns between the IFs. So fit it. 
TACOP/CLCOR ante 1;bif 2;sbdl -15 0;
3 
 
6 
 
  
FRING dparm 2,400,400,0.5,0;aparm(7)=0.1;refa
   1;aparm(5)=0/1
6 
 
 
19,20 
 Do it with average & without (for the record) 
SNEDT
 
20,22 
 
21,23 
  
CLCAL interp 'ambg'/'cube';
6 
23 
7/8 
 
  
SPLIT aparm(1)=2 0;
8 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Data written out for analysis in Difmap 

AIPS Input Files
FRING.TXT
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_FRING1_DEL_1.PS
SN_FRING1_DEL_2.PS
SN_FRING1_RAT_1.PS
SN_FRING1_RAT_2.PS
SN_FRING1_SNR_1.PS
SN_FRING1_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? Yes
Comments on Difmap processing
VLBApls model is close to the data, but our model fit does not include the extended components. The resolution maybe the reason.

Image
Ampl, Phase vs (u,v) Distance
PS (28 kb)
JPEG (39 kb)
 Ampl, Phase vs Time
PS (85 kb)
JPEG 1, 2		 (u,v) Coverage
PS (15 kb)
JPEG (26 kb)
Closure Phase vs Time
PS (52 kb)
JPEG 1		 Clean Image
PS (29 kb)
JPEG (76 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (28 kb)
JPEG (38 kb)
 Ampl, Phase vs Time
PS (85 kb)
JPEG 1, 2		 (u,v) Coverage
PS (15 kb)
JPEG (26 kb)
Closure Phase vs Time
PS (51 kb)
JPEG 1		 Image with model components
PS (29 kb)
JPEG (36 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)
0.410607 0.00105812 130.166 0.279443 1.00000 0.00000 0.2566
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Fri Aug 6 08:27:51 GMT 2004
by db_results.pl version 0.3.