[daip] DBCON problem

[Lauren E. Davis]

I am trying to combine two data sets, CD observvations from 1998, and B 
array from 2001.  When I combine them using DBCON, I actually obtain a 
_higher_ flux integral.  All I can guess is that I don't understand the 
reweight parameter -- from the help file I thought that I would be able 
to set it to zero for these data.  Could you suggest anything?  The data 
headers and the DBCON parameters are attached below.  Thanks very much 
for any help,

Lauren Davis


Image=NGC157    (UV)         Filename=N157CD      .UVSRT .   2
AIPS 2: Telescope=VLA                Receiver=VLA
AIPS 2: Observer=AR326               User #=   27
AIPS 2: Observ. date=27-OCT-1994     Map date=26-AUG-2004
AIPS 2: # visibilities     57345     Sort order  TB
AIPS 2: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  BASELINE  TIME1
AIPS 2:            WEIGHT  SCALE
AIPS 2: ----------------------------------------------------------------
AIPS 2: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
AIPS 2: COMPLEX      1   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 2: STOKES       4   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 2: FREQ        63   1.4128414E+09      32.00  2.4414061E+04    0.00
AIPS 2: IF           2   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 2: RA           1    00 34 46.500       1.00       3600.000    0.00
AIPS 2: DEC          1   -08 23 48.000       1.00       3600.000    0.00
AIPS 2: ----------------------------------------------------------------
AIPS 2: Coordinate equinox 2000.00
AIPS 2: Rest freq   1420.406         Vel type: OPTICAL wrt SUN
AIPS 2: Alt ref. value  1.59054E+06  wrt pixel   32.00
AIPS 2: Maximum version number of extension files of type HI is   1
AIPS 2: Maximum version number of extension files of type AN is   2
AIPS 2: Maximum version number of extension files of type FQ is   1
AIPS 2: Keyword = 'MAXBLINE'  value =  1.592897E+04



AIPS 2: Image=MULTI     (UV)         Filename=NGC157      .LINE  .   3
AIPS 2: Telescope=VLA                Receiver=VLA
AIPS 2: Observer=AB992               User #=   27
AIPS 2: Observ. date=28-APR-2001     Map date=24-APR-2003
AIPS 2: # visibilities   1238147     Sort order  TB
AIPS 2: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  BASELINE  TIME1
AIPS 2:            SOURCE  FREQSEL  WEIGHT  SCALE
AIPS 2: ----------------------------------------------------------------
AIPS 2: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
AIPS 2: COMPLEX      1   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 2: FREQ        63   1.4129849E+09      32.00  2.4414062E+04    0.00
AIPS 2: STOKES       2  -1.0000000E+00       1.00 -1.0000000E+00    0.00
AIPS 2: IF           2   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 2: RA           1    00 00 00.000       1.00       3600.000    0.00
AIPS 2: DEC          1    00 00 00.000       1.00       3600.000    0.00
AIPS 2: ----------------------------------------------------------------
AIPS 2: Coordinate equinox 2000.00
AIPS 2: Rest freq   1420.406         Vel type: OPTICAL wrt SUN
AIPS 2: Alt ref. value  1.56625E+06  wrt pixel   32.00
AIPS 2: Maximum version number of extension files of type HI is   1
AIPS 2: Maximum version number of extension files of type AN is   1
AIPS 2: Maximum version number of extension files of type NX is   1
AIPS 2: Maximum version number of extension files of type SU is   1
AIPS 2: Maximum version number of extension files of type FQ is   1
AIPS 2: Maximum version number of extension files of type CL is   2
AIPS 2: Maximum version number of extension files of type TY is   1
AIPS 2: Maximum version number of extension files of type BP is   1
AIPS 2: Maximum version number of extension files of type FG is   5
AIPS 2: Maximum version number of extension files of type PL is   4
AIPS 2: Keyword = 'OBSCHANS'  value =           64
AIPS 2: Keyword = 'CORRMODE'  value = '4       '
AIPS 2: Keyword = 'SELCHANS'  value =           63
AIPS 2: Keyword = 'VLAIFS  '  value = 'ABCD    '



AIPS 2: DBCON     Task which concatenates two uv data bases .
AIPS 2: Adverbs         Values            Comments
AIPS 2: ----------------------------------------------------------------
AIPS 2: INNAME     'N157CD      '          Input UV file name (name)
AIPS 2: INCLASS    'UVSRT '                Input UV file name (class)
AIPS 2: INSEQ         2                    Input UV file name (seq. #)
AIPS 2: INDISK        1                    Input UV file disk unit #
AIPS 2: IN2NAME    'NGC157      '          2nd input file name.
AIPS 2: IN2CLASS   'SPLIT '                2nd input file class.
AIPS 2: IN2SEQ        2                    2nd input file seq. #
AIPS 2: IN2DISK       2                    2nd input file disk number
AIPS 2: REWEIGHT      0           0        Weight factors.
AIPS 2: OUTNAME    '157BCD14    '          Output UV file name (name)
AIPS 2: OUTCLASS   '      '                Output UV file name (class)
AIPS 2: OUTSEQ        0                    Output UV file name (seq. #)
AIPS 2: OUTDISK       5                    Output UV file disk unit #.
AIPS 2: DOPOS         1           1        If (1,1) true (+1) check pos.
AIPS 2:               1           1        will shift second if nec.
AIPS 2:               1           1        If (2,1) true check freq.
AIPS 2:               1           1
AIPS 2: DOARRAY      -1                    If true (+1) output data will
AIPS 2:                                    be the same subarray as input