[daip] Error with merging VLA and MERLIN data
Doug Gobeille
dgobeille at usf.edu
Wed Jul 9 10:14:41 EDT 2014
I am encountering an issue when trying to use DBCON to merge two datasets:
one from the VLA and another from MERLIN. They share similar frequencies (C
band). My procedure, in short, was as follows:
1.) Load calibrated data in via FITLD:
restore 0
indi 1
outdi 1
getn 1;zap
getn 2;zap
getn 3;zap
getn 4;zap
task 'fitld'
datain 'J0833+1124.MERLIN.010297.C
go;wait
datain 'J0833+1124.AS0172.A.C
go;wait
getn 1
imh;wait
getn 2
imh;wait
2.) Adjust phase center of VLA data to coincide with higher resolution
MERLIN phase center using AXDEFINE:
task 'axdefine'
naxis 4
axtype 'ra'
axref 1
axinc 0
axval= 128.30 0.00986666
axdef
imh
naxis 5
axtype 'dec'
axval= 11.3934 0.0000027778
axinc 0
axdef
imh
3.) Scaled core fluxes to match using UVMOD:
task 'uvmod'
factor 1.64125
go;wait
4.) Attempted to merge new UVMOD file with loaded MERLIN FITS file:
task 'dbcon'
getn 3
get2n 1
dopos 1,-1
doarray =-1
go;wait
At this point I get the error:
DBCON1: Task DBCON (release of 31DEC13) begins
DBCON1: RA does not match, will shift second
DBCON1: DEC does not match, will shift second
DBCON1: RA AXIS HAS UNEQUAL ATTRIBUTES
DBCON1: Purports to die of UNNATURAL causes
DBCON1: ubuntu 31DEC13 TST: Cpu= 0.0 Real= 0
AIPS 1: Resumes
AIPS 1: DBCON was not found to be running
The entirety of my output is copied below along. The only thing I can see
is that there are two DEC values at the end rather than one. I called imh
numerous times throughout to track the progress.
Any thoughts?
~Doug
***************************************OUTPUT******************************************
>task 'fitld'
>datain 'J0833+1124.MERLIN.010297.C
>go;wait
FITLD1: Task FITLD (release of 31DEC13) begins
FITLD1: Found 0830+115 observed on 01-JAN-1997
FITLD1: Create 0830+115 .SPLIT . 1 (UV) on disk 1 cno 1
AIPS 1: Resumes
FITLD1: Image=0830+115 (UV) Filename=0830+115 .SPLIT . 1
FITLD1: Telescope=MERLIN2 Receiver=
FITLD1: Observer= User #= 3666
FITLD1: Observ. date=01-JAN-1997 Map date=09-JUL-2014
FITLD1: # visibilities 13550 Sort order TB
FITLD1: Rand axes: UU-L-SIN VV-L-SIN WW-L-SIN BASELINE TIME1
FITLD1: ----------------------------------------------------------------
FITLD1: Type Pixels Coord value at Pixel Coord incr Rotat
FITLD1: COMPLEX 3 0.0000000E+00 1.00 1.0000000E+00 0.00
FITLD1: STOKES 4 -1.0000000E+00 1.00 -1.0000000E+00 0.00
FITLD1: FREQ 1 4.9940000E+09 1.00 1.3000000E+07 0.00
FITLD1: IF 1 1.0000000E+00 1.00 1.0000000E+00 0.00
FITLD1: RA 1 08 33 14.368 1.00 3600.000 0.00
FITLD1: DEC 1 11 23 36.250 1.00 3600.000 0.00
FITLD1: ----------------------------------------------------------------
FITLD1: Coordinate equinox 2000.00
FITLD1: Rest freq 0.000 Vel type: OPTICAL wrt YOU
FITLD1: Alt ref. value 0.00000E+00 wrt pixel 1.00
FITLD1: Maximum version number of extension files of type HI is 1
FITLD1: Maximum version number of extension files of type NX is 1
FITLD1: Maximum version number of extension files of type FQ is 1
FITLD1: Maximum version number of extension files of type AN is 1
FITLD1: Appears to have ended successfully
FITLD1: ubuntu 31DEC13 TST: Cpu= 0.2 Real= 0 IO= 10
AIPS 1: Task FITLD has finished
>datain 'J0833+1124.AS0172.A.C
>go;wait
FITLD1: Task FITLD (release of 31DEC13) begins
FITLD1: Found AB4 observed on 26-SEP-1983
FITLD1: Create AB4 .SPLIT . 1 (UV) on disk 1 cno 2
FITLD1: UVFDAT: counts for cross-correlations
FITLD1: UVFDAT: found 26820 spectra samples already flagged
FITLD1: UVFDAT: found 50.000 percent samples already flagged
FITLD1: Image=AB4 (UV) Filename=AB4 .SPLIT . 1
FITLD1: Telescope=VLA Receiver=VLA
FITLD1: Observer=AS172 User #= 3666
FITLD1: Observ. date=26-SEP-1983 Map date=09-JUL-2014
FITLD1: # visibilities 6705 Sort order TB
FITLD1: Rand axes: UU-L-SIN VV-L-SIN WW-L-SIN BASELINE TIME1
FITLD1: ----------------------------------------------------------------
FITLD1: Type Pixels Coord value at Pixel Coord incr Rotat
FITLD1: COMPLEX 3 1.0000000E+00 1.00 1.0000000E+00 0.00
FITLD1: STOKES 4 -1.0000000E+00 1.00 -1.0000000E+00 0.00
FITLD1: FREQ 1 4.8851000E+09 1.00 5.0000000E+07 0.00
FITLD1: IF 2 1.0000000E+00 1.00 1.0000000E+00 0.00
LOGFILE FOR USER 3666 GETTING LARGE: USE PRTMSG AND CLRMSG NOW!
FITLD1: RA 1 08 33 15.041 1.00 3600.000 0.00
FITLD1: DEC 1 11 23 41.497 1.00 3600.000 0.00
FITLD1: ----------------------------------------------------------------
FITLD1: Coordinate equinox 2000.00
FITLD1: Observed RA 08 30 30.600 DEC 11 33 58.00
FITLD1: Rest freq 0.000 Vel type: OPTICAL wrt YOU
FITLD1: Alt ref. value 0.00000E+00 wrt pixel 1.00
FITLD1: Maximum version number of extension files of type HI is 1
FITLD1: Maximum version number of extension files of type NX is 1
FITLD1: Maximum version number of extension files of type FQ is 1
FITLD1: Maximum version number of extension files of type WX is 1
FITLD1: Maximum version number of extension files of type OF is 1
FITLD1: Maximum version number of extension files of type AN is 1
FITLD1: Appears to have ended successfully
FITLD1: ubuntu 31DEC13 TST: Cpu= 0.0 Real= 0 IO= 2
AIPS 1: Resumes
AIPS 1: FITLD was not found to be running
>getn 1
AIPS 1: Got(1) disk= 1 user=3666 type=UV 0830+115.SPLIT.1
>imh;wait
AIPS 1: Image=0830+115 (UV) Filename=0830+115 .SPLIT . 1
AIPS 1: Telescope=MERLIN2 Receiver=
AIPS 1: Observer= User #= 3666
AIPS 1: Observ. date=01-JAN-1997 Map date=09-JUL-2014
AIPS 1: # visibilities 13550 Sort order TB
AIPS 1: Rand axes: UU-L-SIN VV-L-SIN WW-L-SIN BASELINE TIME1
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type Pixels Coord value at Pixel Coord incr Rotat
AIPS 1: COMPLEX 3 0.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: STOKES 4 -1.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 1: FREQ 1 4.9940000E+09 1.00 1.3000000E+07 0.00
AIPS 1: IF 1 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: RA 1 08 33 14.368 1.00 3600.000 0.00
AIPS 1: DEC 1 11 23 36.250 1.00 3600.000 0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Rest freq 0.000 Vel type: OPTICAL wrt YOU
AIPS 1: Alt ref. value 0.00000E+00 wrt pixel 1.00
AIPS 1: Maximum version number of extension files of type HI is 1
AIPS 1: Maximum version number of extension files of type NX is 1
AIPS 1: Maximum version number of extension files of type FQ is 1
AIPS 1: Maximum version number of extension files of type AN is 1
AIPS 1: FITLD was not found to be running
>getn 2
AIPS 1: Got(1) disk= 1 user=3666 type=UV AB4.SPLIT.1
>imh;wait
AIPS 1: Image=AB4 (UV) Filename=AB4 .SPLIT . 1
AIPS 1: Telescope=VLA Receiver=VLA
AIPS 1: Observer=AS172 User #= 3666
AIPS 1: Observ. date=26-SEP-1983 Map date=09-JUL-2014
AIPS 1: # visibilities 6705 Sort order TB
AIPS 1: Rand axes: UU-L-SIN VV-L-SIN WW-L-SIN BASELINE TIME1
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type Pixels Coord value at Pixel Coord incr Rotat
AIPS 1: COMPLEX 3 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: STOKES 4 -1.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 1: FREQ 1 4.8851000E+09 1.00 5.0000000E+07 0.00
AIPS 1: IF 2 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: RA 1 08 33 15.041 1.00 3600.000 0.00
AIPS 1: DEC 1 11 23 41.497 1.00 3600.000 0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Observed RA 08 30 30.600 DEC 11 33 58.00
AIPS 1: Rest freq 0.000 Vel type: OPTICAL wrt YOU
AIPS 1: Alt ref. value 0.00000E+00 wrt pixel 1.00
AIPS 1: Maximum version number of extension files of type HI is 1
AIPS 1: Maximum version number of extension files of type NX is 1
AIPS 1: Maximum version number of extension files of type FQ is 1
AIPS 1: Maximum version number of extension files of type WX is 1
AIPS 1: Maximum version number of extension files of type OF is 1
AIPS 1: Maximum version number of extension files of type AN is 1
AIPS 1: Keyword = 'CORRMODE' value = ' '
AIPS 1: Keyword = 'VLAIFS ' value = 'ABCD '
AIPS 1: Keyword = 'CORRCOEF' value = -1
AIPS 1: Keyword = 'MAXABSU ' value = -1.000000E+00
AIPS 1: Keyword = 'SOURNAM1' value = 'AB4 '
AIPS 1: Keyword = 'SOURNAM2' value = ' '
AIPS 1: FITLD was not found to be running
>
>
>task 'axdefine'
>naxis 4
>axtype 'ra'
>axref 1
>axinc 0
>axval= 128.30 0.00986666
>axdef
>imh
AIPS 1: Image=AB4 (UV) Filename=AB4 .SPLIT . 1
AIPS 1: Telescope=VLA Receiver=VLA
AIPS 1: Observer=AS172 User #= 3666
AIPS 1: Observ. date=26-SEP-1983 Map date=09-JUL-2014
AIPS 1: # visibilities 6705 Sort order TB
AIPS 1: Rand axes: UU-L-SIN VV-L-SIN WW-L-SIN BASELINE TIME1
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type Pixels Coord value at Pixel Coord incr Rotat
AIPS 1: COMPLEX 3 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: STOKES 4 -1.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 1: FREQ 1 4.8851000E+09 1.00 5.0000000E+07 0.00
AIPS 1: RA 2 08 33 14.369 1.00 3600.000 0.00
AIPS 1: RA 1 08 33 15.041 1.00 3600.000 0.00
AIPS 1: DEC 1 11 23 41.497 1.00 3600.000 0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Observed RA 08 30 30.600 DEC 11 33 58.00
AIPS 1: Rest freq 0.000 Vel type: OPTICAL wrt YOU
AIPS 1: Alt ref. value 0.00000E+00 wrt pixel 1.00
AIPS 1: Maximum version number of extension files of type HI is 1
AIPS 1: Maximum version number of extension files of type NX is 1
AIPS 1: Maximum version number of extension files of type FQ is 1
AIPS 1: Maximum version number of extension files of type WX is 1
AIPS 1: Maximum version number of extension files of type OF is 1
AIPS 1: Maximum version number of extension files of type AN is 1
AIPS 1: Keyword = 'CORRMODE' value = ' '
AIPS 1: Keyword = 'VLAIFS ' value = 'ABCD '
AIPS 1: Keyword = 'CORRCOEF' value = -1
AIPS 1: Keyword = 'MAXABSU ' value = -1.000000E+00
AIPS 1: Keyword = 'SOURNAM1' value = 'AB4 '
AIPS 1: Keyword = 'SOURNAM2' value = ' '
>
>naxis 5
>axtype 'dec'
>axval= 11.3934 0.0000027778
>axinc 0
>axdef
>imh
AIPS 1: Image=AB4 (UV) Filename=AB4 .SPLIT . 1
AIPS 1: Telescope=VLA Receiver=VLA
AIPS 1: Observer=AS172 User #= 3666
AIPS 1: Observ. date=26-SEP-1983 Map date=09-JUL-2014
AIPS 1: # visibilities 6705 Sort order TB
AIPS 1: Rand axes: UU-L-SIN VV-L-SIN WW-L-SIN BASELINE TIME1
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type Pixels Coord value at Pixel Coord incr Rotat
AIPS 1: COMPLEX 3 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: STOKES 4 -1.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 1: FREQ 1 4.8851000E+09 1.00 5.0000000E+07 0.00
AIPS 1: RA 2 08 33 14.369 1.00 3600.000 0.00
AIPS 1: DEC 1 11 23 36.251 1.00 3600.000 0.00
AIPS 1: DEC 1 11 23 41.497 1.00 3600.000 0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Observed RA 08 30 30.600 DEC 11 33 58.00
AIPS 1: Rest freq 0.000 Vel type: OPTICAL wrt YOU
AIPS 1: Alt ref. value 0.00000E+00 wrt pixel 1.00
AIPS 1: Maximum version number of extension files of type HI is 1
AIPS 1: Maximum version number of extension files of type NX is 1
AIPS 1: Maximum version number of extension files of type FQ is 1
AIPS 1: Maximum version number of extension files of type WX is 1
AIPS 1: Maximum version number of extension files of type OF is 1
AIPS 1: Maximum version number of extension files of type AN is 1
AIPS 1: Keyword = 'CORRMODE' value = ' '
AIPS 1: Keyword = 'VLAIFS ' value = 'ABCD '
AIPS 1: Keyword = 'CORRCOEF' value = -1
AIPS 1: Keyword = 'MAXABSU ' value = -1.000000E+00
AIPS 1: Keyword = 'SOURNAM1' value = 'AB4 '
AIPS 1: Keyword = 'SOURNAM2' value = ' '
>
>task 'uvmod'
>factor 1.64125
>go;wait
UVMOD1: Task UVMOD (release of 31DEC13) begins
UVMOD1: UVGET: doing no flagging this time
UVMOD1: Create AB4 .UVMOD . 1 (UV) on disk 1 cno 3
UVMOD1: UVMOD TYPE( 001) = 'POIN'
UVMOD1: UVMOD IMAX( 001) = 0.0000E+00 / in Jy.
UVMOD1: UVMOD QMAX( 001) = 0.0000E+00 / in Jy.
UVMOD1: UVMOD UMAX( 001) = 0.0000E+00 / in Jy.
UVMOD1: UVMOD VMAX( 001) = 0.0000E+00 / in Jy.
UVMOD1: UVMOD GPOS(1, 001) = 0.0000E+00 / in Arcsec.
UVMOD1: UVMOD GPOS(2, 001) = 0.0000E+00 / in Arcsec.
UVMOD1: UVMOD FLUX = 0.0000E+00 / noise added in Jy./Wgt.
UVMOD1: UVMOD FACTOR = 1.6413E+00
UVMOD1: Copied OF file from vol/cno/vers 1 2 1 to 1 3 1
UVMOD1: Updating tables for IF/FREQID/channel selection
UVMOD1: Reformatted AN file from vol/cno/vers 1 2 1 to 1 3 1
UVMOD1: Copied WX file from vol/cno/vers 1 2 1 to 1 3 1
UVMOD1: Appears to have ended successfully
UVMOD1: ubuntu 31DEC13 TST: Cpu= 0.0 Real= 0 IO= 3
AIPS 1: Resumes
AIPS 1: UVMOD was not found to be running
>
>task 'dbcon'
>getn 3
AIPS 1: Got(1) disk= 1 user=3666 type=UV AB4.UVMOD.1
>get2n 1
AIPS 1: Got(2) disk= 1 user=3666 type=UV 0830+115.SPLIT.1
>dopos 1,-1
>doarray =-1
>go;wait
DBCON1: Task DBCON (release of 31DEC13) begins
DBCON1: RA does not match, will shift second
DBCON1: DEC does not match, will shift second
DBCON1: RA AXIS HAS UNEQUAL ATTRIBUTES
DBCON1: Purports to die of UNNATURAL causes
DBCON1: ubuntu 31DEC13 TST: Cpu= 0.0 Real= 0
AIPS 1: Resumes
AIPS 1: DBCON was not found to be running
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