vs01t Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Steven Tingay
Date Prepared: 19-04-1999
 

Summary
 
Observation code : vs01t    AIPS Version : 15APR99   
Date of Observation : 1997/325    Difmap Version : 2.3c 
Source Name : 0637-752    vsop_difmap used : Yes 
Calibration Source(s) :          
Ground telescopes : MP HH AT  Model Fitted to data : Yes 
Tracking Station(s) : GZ    Image made : Yes 
Correlator : Penticton         

 
Abstract
These survey products were generated from an already-reduced GOT dataset (V115c). The fully reduced GOT data were used to produce the survey-required AIPS plots (adhering as closely as possible to the most recently released VSOP survey documentation and scripts). A subset of antennas and timeranges were extracted to produce the VSOP survey dataset and the imaging and model-fitting for the survey were done on this "extracted" dataset.

Suggested parameters for all AIPS tasks were used. FRING and CLCOR parameters are listed. CALIB was not run so the final SN and CL tables have non-zero phases in them.

Imaging and model-fitting both went very well and produced good results.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
2.34482 0.102486 -132.802 0.541385 0.643537 83.0868 0.6067
1.07042 0.732417 -92.1064 0.348612 0.891001 75.5400 0.4824
0.820008 1.51607 -83.5420 0.622674 0.547589 81.2408 0.1885
(*) 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
CLCOR opcode cloc; clcorprm(1)
    -2000; clcorprm(7) 1; antennas
   4
1 
 
2 
 
 correct 2000 ns delay offset for HALCA 
FRING solint 3; refant 1; dparm
    1 800 500 2 0; aparm 2 0
   0 0 0 1 5 0
2 
 
3 
2 
 found fringes to all antennas 
CLCOR opcode gain; clcorprm(1)
   0.906; antennas 0
3 
 
3 
 
 correct Penticton normalization error 

AIPS Input Files
ANTAB.TXT Comments
- None -

AIPS Output Files
DTSUM_0.LIS
DTSUM_1.LIS
LISTR.LIS
PRTAN.LIS
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
SN_CALIB_PHA_2.PS
SN_CALIB_SNR_1.PS
SN_CALIB_RAT_1.PS
SN_CALIB_RAT_2.PS
SN_CALIB_SNR_2.PS
UVPLT_UV.PS
UVPLT_UVD.PS		 UVPLT_UVPA.PS
POSSM01_AP_1.PS
POSSM01_AP_2.PS
POSSM02_AP_1.PS
POSSM02_AP_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

Image
Ampl, Phase vs (u,v) Distance
PS (69 kb)
JPEG (42 kb)
 Ampl, Phase vs Time
PS (242 kb)
JPEG 1, 2		 (u,v) Coverage
PS (36 kb)
JPEG (30 kb)
Closure Phase vs Time
PS (149 kb)
JPEG 1		 Clean Image
PS (38 kb)
JPEG (46 kb)
Modelfit
Ampl, Phase vs (u,v) Distance
PS (69 kb)
JPEG (42 kb)
 Ampl, Phase vs Time
PS (242 kb)
JPEG 1, 2		 (u,v) Coverage
PS (36 kb)
JPEG (30 kb)
Closure Phase vs Time
PS (149 kb)
JPEG 1		 Image with model components
PS (35 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)
2.34482 0.102486 -132.802 0.541385 0.643537 83.0868 0.6067
1.07042 0.732417 -92.1064 0.348612 0.891001 75.5400 0.4824
0.820008 1.51607 -83.5420 0.622674 0.547589 81.2408 0.1885
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Thu Nov 30 01:21:19 GMT 2000
by db_results.pl version 0.3.