VS01k Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Matt Lister
Date Prepared: 13-09-1999
 

Summary
 
Observation code : VS01k    AIPS Version : 15APR99   
Date of Observation : 1998/209    Difmap Version : 2.3c 
Source Name : 3C345    vsop_difmap used : Yes 
Calibration Source(s) :          
Ground telescopes : BR, NL, SC, MK  Model Fitted to data : Yes 
Tracking Station(s) : RZ, TZ    Image made : No 
Correlator : Socorro         

 
Abstract
This is an extraction from a full VLBA experiment, as such, some plots contain all 10 ground antennas. All antennas but BR, NL and SC were flagged in DIFMAP. Raw data contained all 4 polariz, but only LL was useful. Had to flag RR and CROS with UVFLG, then did UVCOP.
Model
Flux (Jy)
Radius (mas)
Theta (deg)
Major (mas)
Axial ratio
Phi (deg)
TB (10^12 K)
1.52809 0.0699149 -7.93681 0.301789 0.650056 24.4192 1.2595
1.19764 0.626355 54.2933 0.362180 0.389291 -78.6452 1.1445
(*) 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
 
 
 
 
  
INDXR cparm = 0, 0, 0.25
 
 
1 
 
  
OBTAB aparm = 1,0
 
 
 
 
  
UVFLG infil = 'uvflg.txt'
 
 
 
 
 Flagged timerang 20:00:06 to 20:12:00 (TZ) as per PI letter 
ACCOR solint = 10
1 
 
2 
1 
  
ANTAB
 
 
 
 
 VLBA gain file and TSYS data from aspen used. Gain for SC modified to take into account shift of baseband 5 GHz observing frequency post Dec 97. (See ANTAB.TXT) 
APCAL
2 
 
3 
2 
  
FRING docalib = 1
gainuse = 3
dofit = 0
solint = 5
refant = 5
dparm = 3,100,100,0
cparm = 2,0,0,0,0,1,5,0,1,0
3 
 
4 
4 
 edited SN ver 3 to create SN 4 
SPLIT aparm 2,0,1; gainuse 4
 
 
 
 
  
FITTP
 
 
 
 
 Data written out for analysis in Difmap 

AIPS Input Files
ANTAB.TXT
UVFLG.TXT
INDXR.TXT		 Comments
- None -

AIPS Output Files
DTSUM_0.LIS
DTSUM_1.LIS
LISTR.LIS
PRTAN.LIS
SN_ACCOR_AMP_1.PS
SN_ACCOR_AMP_2.PS		 SN_APCAL_AMP_1.PS
SN_APCAL_AMP_2.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
POSSM1_AP_1.PS


Difmap Data Reduction Notes
Phase selfcal applied? Yes
Global amplitude selfcal (gscal) applied? Yes
Amplitude selfcal on non-global timescales used? Yes
Modelfit made and saved? Yes
Image Made and saved? No
Comments on Difmap processing
Correcting IF 1. A total of 573 telescope corrections were flagged in sub-array 1. Amplitude normalization factor in sub-array 1: 0.985778 Telescope amplitude corrections in sub-array 1: BR 1.04 NL 1.00 SC 0.96 TZ 1.00* RZ 1.01 MK 1.07

Correcting IF 2. A total of 573 telescope corrections were flagged in sub-array 1. Amplitude normalization factor in sub-array 1: 0.994125 Telescope amplitude corrections in sub-array 1: BR 1.03 NL 0.95 SC 1.00 TZ 1.00* RZ 1.00 MK 1.06

Modelfit
Ampl, Phase vs (u,v) Distance
PS (57 kb)
JPEG (41 kb)
 Ampl, Phase vs Time
PS (224 kb)
JPEG 1, 2, 3		 (u,v) Coverage
PS (31 kb)
JPEG (30 kb)
Closure Phase vs Time
PS (195 kb)
JPEG 1, 2		 Image with model components
PS (44 kb)
JPEG (42 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)
1.52809 0.0699149 -7.93681 0.301789 0.650056 24.4192 1.2595
1.19764 0.626355 54.2933 0.362180 0.389291 -78.6452 1.1445
(*) Quoted Brightness temperatures assume Gaussian components and are in the local (z=0) frame.


Last updated on Thu Nov 30 01:18:01 GMT 2000
by db_results.pl version 0.3.