VS11m Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Matt Lister
Date Prepared: 14-04-1999
 

Summary
 
Observation code : VS11m    AIPS Version : 15APR99 
Date of Observation : 1998/217    Difmap Version : 2.3c 
Source Name : 3C 390.3    vsop_difmap used : Yes 
Calibration Source(s) :          
Ground telescopes : SC, PT, NL, MK  Model Fitted to data : No 
Tracking Station(s) : RZ    Image made : No 
Correlator : Socorro         

 
Abstract
Very low flux, 400mjy on shortest (NL-PT) baseline Unable to find space fringes, source probably too weak. Flagged RZ for timerang 4h35m to end due to bad uv coordinates (result of having no delta-t file - J. Ulvestad) Also flagged RZ timerang 1h55 to 2h38 for same reason


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'
 
 
 
 
 Additional flagging done - see abstract 
ACCOR solint = 5
1 
 
2 
1 
  
ANTAB
 
 
 
 
 VLBA gain file and TSYS data from aspen used. SC gain adjusted to account for change of baseband observing frequency in Dec 97. (see ANTAB.TXT) 
APCAL
2 
 
3 
2 
  
FRING docalib = 1
gainuse = 3
dofit = 0
solint = 10
dparm = 3,500, 75,0
cparm = 2,0,0,0,0,1,3.5,0,1,0
3 
 
4 
3 
 Tried variety of windows, solution intervals, snr cutoffs, no space fringes. Also tried fringe fitting ground only, then averaging channels with SPLAT, still no space fringes. Edited final (groundonly) SN 3 to give SN 4 
SPLIT aparm 2,2,1; gainuse 4
 
 
 
 
  
FITTP
 
 
 
 
 Data written out for analysis in Difmap 

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

AIPS Output Files
LISTR.LIS
DTSUM_1.LIS
PRTAN.LIS
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_ACCOR_AMP_1.PS		 SN_ACCOR_AMP_2.PS
SN_APCAL_AMP_1.PS
SN_APCAL_AMP_2.PS


Difmap Data Reduction Notes
Phase selfcal applied? No
Global amplitude selfcal (gscal) applied? No
Amplitude selfcal on non-global timescales used? No
Modelfit made and saved? No
Image Made and saved? No
Comments on Difmap processing
No difmap processing done - no space fringes.



Last updated on Fri Jun 18 03:40:01 GMT 1999
by db_results.pl version 0.2.0.