VS04s Results
Submitted checklist.txt and checklist.tex is also available		   [Summary | AIPS | Difmap ]
Analyst: Zhi-Qiang Shen
Date Prepared: 18-10-1999
 

Summary
 
Observation code : VS04s    AIPS Version : 15OCT98 
Date of Observation : 1997/324    Difmap Version : 2.3c 
Source Name : J0921-26    vsop_difmap used : Yes 
Calibration Source(s) :          
Ground telescopes : Usuda64, Kashima, Mop  Model Fitted to data : No 
Tracking Station(s) : NZ    Image made : No 
Correlator : Penticton         

 
Abstract
No fringes were detected to Halca, consistent with the DQA1 report.

As for the ground baselines, good fringes seen on Usuda64--Mop with a correlated flux density of 0.35Jy at a baseline 100M lambda, similar to the pre-launch survey (0.4Jy@120M lambda).

But, seems Kashima had problem with amplitude for IF1 data and IF2 data were useless.

The non-detection to Halca might be related to the larger (u,v) distance which was more than 2 times longer than the ground ones at any time.

Suggest a re-scheduling.


AIPS Data Reduction Notes
 
Task
Adverbs
CL
in
SN
in
CL
out
SN
out
Comments
FITLD douvcomp=1
dotable=1
 
 
 
 
 Output = VS04S.UVDATA 
MSORT sort='TB'
 
 
 
 
 Input = VS04S.UVDATA; Output = VS04S.MSORT 
INDXR cparm(3)=1
 
 
1 
 
 index uv data with 1 min CL entry interval 
TACOP
1 
 
2 
 
 protect CL1 
ANTAB
 
 
 
 
 determine the Tsys and gain curve, 93.5K for Halca 
APCAL opcode=' '
 
 
 
1 
 generate an amplitude calibration solution table 
CLCAL opcode='CALI'
interpol=' '
refant=0
2 
1 
3 
 
 apply amplitude calibration solution 
UBFLG antenna=3,0
opcode='FLAG'
BIF=2, EIF=2
 
 
 
 
 flag out the bad Kashima IF2 data! 
FRING docalib=1
flagv=1
refant=4
solint=4
aparm=2, 0, 0, 0, 0, 1, 2, 0
dparm=1, 0, 500, 0
antwt=10, 1, 1, 1
3 
 
 
2 
 FFT trial run didn't find any fringes to Halca! So, go to FFT+LS directly with an SNR cutoff=2. Still no fringes to Halca. 
CLCAL opcode='CALI'
interpol=' '
refant=4
3 
2 
4 
 
 apply fringe solution 
TACOP
4 
 
6 
 
 protect CL4 
CLCOR antenna=0
clcorprm=0.91,0
opcode='gain'
6 
 
6 
 
 Penticton gain correction 
CLCOR antenna=3,0
clcorprm=10,0
opcode='gain'
6 
 
6 
 
 Kashima amplitude correction from a trial run. 
TASAV
 
 
 
 
 copy all extension tables to a dummy file 
SPLIT docalib=1
douvcomp=1
aparm= 2, 0, 0, 1, 0
 
 
 
 
 make calibrated single-source data J0921-26.SPLIT 
FITTP
 
 
 
 
 export each single-source file in FITS format to disk file for further imaging analysis 

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

AIPS Output Files
PRTAN.LIS
LISTR.LIS
DTSUM_0.LIS
DTSUM_1.LIS
UVPLT_UVD.PS
UVPLT_UVPA.PS
UVPLT_UV.PS
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_RAT_1.PS
SN_CALIB_RAT_2.PS
SN_CALIB_SNR_1.PS		 SN_CALIB_SNR_2.PS
VPLOT_AP_2.PS
VPLOT_AP_1.PS
POSSM01_AP_1.PS
POSSM01_AP_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



Last updated on Tue Oct 19 02:21:05 GMT 1999
by db_results.pl version 0.2.0.