[daip] NGC 157 (fwd)

Wed Mar 9 11:57:21 EST 2005

Hello AIP,

I am having difficulty combining two data sets using DBCON; one is a 
previously combined set of C and D array data, and the other is B array 
data.  While running the task I get a couple of error messages, but the 
task ends successfully and produces a viable file.  However, when I look 
at the uv coverage with UVPLT, it only extends to about 14 kilo lambda, 
comparable to the CD data alone.   

The CD header is as follows:

AIPS 1: Image=NGC157    (UV)         Filename=N157CD      .UVSRT .   2
AIPS 1: Telescope=VLA                Receiver=VLA
AIPS 1: Observer=AR326               User #=   27
AIPS 1: Observ. date=27-OCT-1994     Map date=26-AUG-2004
AIPS 1: # visibilities     57345     Sort order  TB
AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  BASELINE  TIME1
AIPS 1:            WEIGHT  SCALE
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
AIPS 1: COMPLEX      1   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        63   1.4128414E+09      32.00  2.4414062E+04    0.00
AIPS 1: IF           2   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: RA           1    00 34 46.500       1.00       3600.000    0.00
AIPS 1: DEC          1   -08 23 48.000       1.00       3600.000    0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Rest freq   1420.406         Vel type: OPTICAL wrt SUN
AIPS 1: Alt ref. value  1.59054E+06  wrt pixel   32.00
AIPS 1: Maximum version number of extension files of type HI is   1
AIPS 1: Maximum version number of extension files of type AN is   2
AIPS 1: Maximum version number of extension files of type FQ is   1

The B header:

AIPS 1: Got(1)   disk= 1  user=  27   type=UV   N157B.SPLIT.1
AIPS 1: Image=NGC157    (UV)         Filename=N157B       .SPLIT .   1
AIPS 1: Telescope=VLA                Receiver=VLA
AIPS 1: Observer=AB992               User #=   27
AIPS 1: Observ. date=28-APR-2001     Map date=30-JUN-2004
AIPS 1: # visibilities    841458     Sort order  TB
AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  BASELINE  TIME1
AIPS 1:            WEIGHT  SCALE
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
AIPS 1: COMPLEX      1   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: STOKES       2  -1.0000000E+00       1.00 -1.0000000E+00    0.00
AIPS 1: FREQ        63   1.4129849E+09      32.00  2.4414062E+04    0.00
AIPS 1: IF           2   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: RA           1    00 34 46.700       1.00       3600.000    0.00
AIPS 1: DEC          1   -08 23 48.000       1.00       3600.000    0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Rest freq   1420.406         Vel type: OPTICAL wrt SUN
AIPS 1: Alt ref. value  1.59054E+06  wrt pixel   32.00
AIPS 1: Maximum version number of extension files of type FQ is   1
AIPS 1: Maximum version number of extension files of type HI is   1
AIPS 1: Maximum version number of extension files of type AN is   1
AIPS 1: Maximum version number of extension files of type FG is   1
AIPS 1: Keyword = 'MAXBLINE'  value =  5.233264E+04

And the entire output from DBCON is:

DBCON1: Task DBCON  (release of 15OCT99) begins
DBCON1: New reference day is 19941027
DBCON1: Scaling u,v,w of data set 2 by  9.9946437E-01
DBCON1: Scaling u,v,w of data set 1 by  9.9946432E-01
DBCON1: RA DOES NOT MATCH, WILL SHIFT SECOND
DBCON1: Create N157BCD     .DBCON .   1 (UV)  on disk  6  cno   18
DBCON1: Consolidate AN files from vol/cno/vers  1  17  1 and  1  3  1
DBCON1: Copied AN file from vol/cno/vers  1   17   2 to  6   18   2
DBCON1: DBIF: FQ tables may be incompatible
DBCON1: Copied FQ file from vol/cno/vers  1   17   1 to  6   18  1
DBCON1: TABINI: SOME ERROR IN LIST OF TABLE DATA TYPES
DBCON1: DBCAPP: ERROR    1 OPENING INPUT TABLE
DBCON1: Appears to have ended successfully

My imputs to DBCON:

AIPS 1: DBCON     Task which concatenates two uv data bases .
AIPS 1: Adverbs         Values            Comments
AIPS 1: ----------------------------------------------------------------
AIPS 1: INNAME     'N157CD      '          Input UV file name (name)
AIPS 1: INCLASS    'UVSRT '                Input UV file name (class)
AIPS 1: INSEQ         2                    Input UV file name (seq. #)
AIPS 1: INDISK        1                    Input UV file disk unit #
AIPS 1: IN2NAME    'N157B       '          2nd input file name.
AIPS 1: IN2CLASS   'SPLIT '                2nd input file class.
AIPS 1: IN2SEQ        1                    2nd input file seq. #
AIPS 1: IN2DISK       1                    2nd input file disk number
AIPS 1: REWEIGHT      0           0        Weight factors.
AIPS 1: OUTNAME    'N157BCD     '          Output UV file name (name)
AIPS 1: OUTCLASS   '      '                Output UV file name (class)
AIPS 1: OUTSEQ        0                    Output UV file name (seq. #)
AIPS 1: OUTDISK       6                    Output UV file disk unit #.
AIPS 1: DOPOS         1           1        If (1,1) true (+1) check pos.
AIPS 1:               1           1        will shift second if nec.
AIPS 1:               1           1        If (2,1) true check freq.
AIPS 1:               1           1
AIPS 1: DOARRAY      -1                    If true (+1) output data will
AIPS 1:                                    be the same subarray as input

I have run the task with DOARRAY set to 1 as well, which does not improve 
the results.  Do you know what the problem might be?  The error message 
refers to the FQ tables, but I'm not experienced enough with AIPS to 
identify or fix the specific problem.

Thanks for your help,

Lauren Davis