VS02b Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Shinjii HORIUCHI
Date Prepared: 25-05-2001
 

Summary
 
Observation code : VS02b    AIPS Version : 15OCT99   
Date of Observation : 1998/35    Difmap Version : 2.3c 
Source Name : J1613+3412    vsop_difmap used : Yes 
Calibration Source(s) : 1334-127         
Ground telescopes : KA, MP, NT  Model Fitted to data : Yes 
Tracking Station(s) : TZ,GZ,TX    Image made : Yes 
Correlator : Penticton         

 
Abstract
Good signal to noise with Halca-GRTs baselines. No short spacing available less than 100 M lambda. Kashima showed very low amplitude for unknown reason and resulted to be flagged. Then only baselines longer than 200 Mlambda was available and phase clousere was fulfiled for only few miniutes. Imaging was made with self-cal only once and with no amplitude selfcal. There were two fetures with separation about 4 mas in N-S direction, which are consistent with USNO images.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
0.939047 0.00979883 62.2640 0.158827 1.00000 -33.6901 1.8166
0.601904 2.84368 160.675 0.587598 1.00000 -45.0000 0.0851
(*) 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
 
 
 
 
  
INDXR
 
 
 
 
  
ACCOR SOLINT=2
 
1 
 
 
  
CLCAL
1 
1 
2 
 
  
APCAL
 
8 
 
 
  
CLCAL
2 
8 
3 
 
 --------------------------------------------------------- 
FRING Solint=6, APARM(7)=3, DPARM=1,1000,
   400, 0, REFANT=3
3 
 
 
9 
  
ANTAB
 
 
 
 
 TY1, GC1 are generated. 
APCAL
 
 
 
12 
  
CLCAL
2 
12 
8 
 
 SMOTY 'AMPL" 
CLCAL
8 
9 
9 
 
 SMOTY 'VLBI" 
TACOP
9 
 
10 
 
  
CLCOR OPCODE='GAIN', ANTENNAS=1
10 
 
10 
 
  
SPLIT
10 
 
 
 
  
FITTP
 
 
 
 
  

AIPS Input Files
Comments
- None -

AIPS Output Files
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
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
POSSM01_AP1.PS
POSSM01_AP2.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
Phase self-cal was performed only with selfflag false, 3,4 mode. The closure phase is fulfiled only few minutes. There were two fetures with separation about 4 mas in N-S direction, which are consistent with USNO images.

Image
Ampl, Phase vs (u,v) Distance
PS (29 kb)
JPEG (41 kb)
 Ampl, Phase vs Time
PS (171 kb)
JPEG 1, 2, 3		 (u,v) Coverage
PS (17 kb)
JPEG (27 kb)
Closure Phase vs Time
PS (120 kb)
JPEG 1		 Clean Image
PS (31 kb)
JPEG (45 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (29 kb)
JPEG (40 kb)
 Ampl, Phase vs Time
PS (165 kb)
JPEG 1, 2, 3		 (u,v) Coverage
PS (17 kb)
JPEG (27 kb)
Closure Phase vs Time
PS (120 kb)
JPEG 1		 Image with model components
PS (33 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)
0.939047 0.00979883 62.2640 0.158827 1.00000 -33.6901 1.8166
0.601904 2.84368 160.675 0.587598 1.00000 -45.0000 0.0851
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Sun Nov 11 21:02:22 GMT 2001
by db_results.pl version 0.3.