VS07T Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Richard Dodson
Date Prepared: 1-11-1999
 

Summary
 
Observation code : VS07T    AIPS Version : 15APR99   
Date of Observation : 1999/222    Difmap Version : 2.3c 
Source Name : J0115-012    vsop_difmap used : Yes 
Calibration Source(s) : 0202+149         
Ground telescopes : MOP, SES, HOBbit  Model Fitted to data : Yes 
Tracking Station(s) : GZ, TZ, RZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
Made a number of SN tables in the first fringe finding stage as I demonstrated various ways to run KRING incorrectly.

0202+149 matches VS07U

J0115-012 has extended structure, but it not easy to seperate that from the uv-coverages sidelobes. Rather poorly fitted with 2 pts and a gaussian.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.145130 0.0601725 -84.5395 0 0 0 0.0000
0.0655399 1.91413 -55.0750 0 0 0 0.0000
0.335089 1.06651 -67.2497 1.00000 1.00000 0.00000 0.0164
(*) 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 douvcomp = 1; clint = 0.25
    ; digicor = -1; delcorr =
   -1
 
 
1 
 
 Created VS07T.MULTI.1 
MSORT
 
 
 
 
  
INDXR cparm = 0, 0, 0.25
 
 
1 
 
 INDXR.TXT from PI letter 
ANTAB
 
 
 
 
 logs2keyin.pl used for Tsys 
APCAL
 
 
 
1 
  
CLCAL refant=2;opcode='calp';smotyp='ampl';interpol='box';intp=10;
1 
1 
2 
 
 Amplitude calibration and smoothing applied. 
TACOP
2 
 
3 
 
 Copy CL tables 
KRING cparm
   0,0,2,1000,300,.1,0,100,1,0;refant=2;
bparm(5)=0.5;solint 0;SOLTYPE
   'NOLS'
3 
 
 
2 
 No LSS. Prelim work has shown that the frings are close to zero (+-200). bparm(5)=0.5 has to be set. 
KRING cparm
   0,0,2,1000,300,.1,0,100,1,0;refant=2;
bparm(5)=0.5;solint 0;SOLTYPE
   ''
3 
 
 
3 
 The same with LSS. 
FRING docalib = 1; dparm 1,400,200,0.5,1,0;aparm(7)=0.1;solint
   10
3 
 
 
5 
 No LSS. 
KRING cparm
   0,,2,400,300,-1,-1,-1,-1,4;refant=2;
bparm 0,1,0,0,0.5,0;solint
   600;SOLTYPE NOLS''
3 
 
 
6 
 The same with LSS. 
SNEDT
 
6 
 
7 
  
CLCAL interpol
   'box';intparm=0.25;smotype='VLBI';
opcode='CALP';refant=2
3 
7 
5 
 
  
FRING dparm 2 100 100 0.5 0;aparm(7)=2;solint
   10
5 
 
 
8 
 with LSS. 
SNEDT
 
8 
 
9 
  
CLCAL interpol
   '2pt';intparm=0.25;smotype='VLBI';opcode='CALP';
5 
9 
6 
 
  
POSSM timer 0 15 0 0 0 15 30 0
6 
 
 
 
 Check the Pass band over 20 mins. 
UVFLG antenna 3,0;bchan 1;echan 20;
 
 
 
 
 remove bottom 20 chans of Shanghi. 
SPLIT aparm(1)=1;
6 
 
 
 
 Av within IF 
FITTP
 
 
 
 
 Both sources written out for analysis in Difmap 

AIPS Input Files
INDXR.TXT
ANTAB.TXT
SN3.TXT
SN4.TXT		 Comments
logs2keyin.pl used

Additional Files
NameDescription
SUR_7T.0JPSurvey run file

AIPS Output Files
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
SN_FRING02_DEL_2.PS
SN_FRING02_RAT_1.PS
SN_FRING02_RAT_2.PS
SN_POSSM_1.PS
SN_POSSM_2.PS
SN_FRING03_RAT_1.PS
SN_POSSM_3.PS
SN_POSSM_4.PS
SN_POSSM_5.PS
SN_POSSM_6.PS
SN_POSSM_7.PS
SN_POSSM_8.PS
SN_POSSM_9.PS
SN_FRING02_SNR_2.PS
SN_FRING03_DEL_1.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_FRING02_DEL_1.PS
SN_FRING02_SNR_1.PS
SN_FRING03_DEL_2.PS
SN_FRING03_RAT_2.PS
SN_FRING03_SNR_1.PS
SN_FRING03_SNR_2.PS
SN_FRING04_DEL_1.PS
SN_FRING04_DEL_2.PS		 SN_FRING04_RAT_1.PS
SN_FRING04_RAT_2.PS
SN_FRING04_SNR_1.PS
SN_FRING04_SNR_2.PS
SN_FRING05_DEL_1.PS
SN_FRING05_DEL_2.PS
SN_FRING05_RAT_1.PS
SN_FRING05_RAT_2.PS
SN_FRING05_SNR_1.PS
SN_FRING05_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? Yes
Amplitude selfcal on non-global timescales used? No
Modelfit made and saved? Yes
Image Made and saved? Yes
Comments on Difmap processing
J0115+15

Had real trouble getting the targets sources lobes from out under the sidelobes, as they fall close to each other.

Limited the selfcal phase correction to 5 minutes.

cleaned to get some sort of provisional answer. Gscal corrections are; VSOP_SC 1.05 MOP 0.91 SESHAN25 1.19 HOBART 0.92 VSOP_SC 1.12 MOP 1.02 SESHAN25 1.19 HOBART 0.92 But when I did my final modeling attempt VSOP_SC 1.05 MOP 0.90 SESHAN25 1.07 HOBART 1.03 VSOP_SC 1.10 MOP 1.01 SESHAN25 1.07 HOBART 1.04 VSOP & Mopra corrections might be right, but not the (larger) Hobart & Seshan ones. So I did nothing.

Model fitted contains 0.55Jy and was one (central) circular gaussian & 2 point sources.

B0202+149 Fitted a gaussian with peak of 1.6Jy -- matches the values from VS07U on similar baselines.

Image
Ampl, Phase vs (u,v) Distance
PS (77 kb)
GIF (8 kb)
 Ampl, Phase vs Time
PS (199 kb)
GIF 1, 2		 (u,v) Coverage
PS (40 kb)
GIF (5 kb)
Closure Phase vs Time
PS (135 kb)
GIF 1		 Clean Image
PS (32 kb)
GIF (103 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (77 kb)
GIF (8 kb)
 Ampl, Phase vs Time
PS (199 kb)
GIF 1, 2		 (u,v) Coverage
PS (40 kb)
GIF (5 kb)
Closure Phase vs Time
PS (135 kb)
GIF 1		 Image with model components
PS (33 kb)
GIF (7 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)
0.145130 0.0601725 -84.5395 0 0 0 0.0000
0.0655399 1.91413 -55.0750 0 0 0 0.0000
0.335089 1.06651 -67.2497 1.00000 1.00000 0.00000 0.0164
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Mon Oct 16 02:26:08 GMT 2000
by db_results.pl version 0.2.0.