[daip] aips problem

[Eric Greisen]

Bob Becker writes:
 > hello, i am trying to run wfcln on from data taken
 > in 1990. i get the following error message
 > 
 > WFCLN2: Task WFCLN  (release of 31DEC01) begins
 > WFCLN2: OBPUT: BAD DIMENSION ARRAY
 > WFCLN2: KEYWORD =BCOMP
 > WFCLN2: OBPUT: PROBLEM WITH OBJECT: CLEAN process object
 > WFCLN2: IN2OBJ: ERROR COPYING FROM:Input
 > WFCLN2: IN2OBJ:                 TO:CLEAN process object
 > WFCLN2: Purports to die of UNNATURAL causes
 > WFCLN2: ucbob        31DEC01 TST: Cpu=       0.0  Real=       0
 > 
 > 
 > the header for the offending uv data looks identical to one from
 > some more recent data. the version of aips i am using is
 > 
 > 31DEC01
 > 
 > any advice?
 > 

    Yes - use IMAGR.  WFCLN offers nothing that is not in IMAGR and,
since no one uses WFCLN, minor bugs do not get caught.  Of couse, with
a 31DEC01 version, even if they are caught they are not fixed.

In this case, the Clean object is expecting BCOMP(MAXFLD) where MAXFLD
is 512 or so (4192 now in 31DEC02) and the adverbs only allow for 64
(MAXAFL).  There are a number of tricky things in going from this
mismatch - needing more facets than is reasonable to have in adverbs.

Eric Greisen


 > bob becker
 > 
 > 
 > ps the header of the offending data follows
 > 
 > AIPS 2: Image=35133-33  (UV)         Filename=35133-33    .UVSRT .   1
 > AIPS 2: Telescope=VLA                Receiver=VLA
 > AIPS 2: Observer=AB573               User #=  400
 > AIPS 2: Observ. date=26-SEP-1990     Map date=17-NOV-2002
 > AIPS 2: # visibilities      2820     Sort order  XY
 > 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         1   4.8726000E+09       1.00  2.5000000E+07    0.00
 > AIPS 2: IF           2   1.0000000E+00       1.00  1.0000000E+00    0.00
 > AIPS 2: RA           1    17 21 16.500       1.00       3600.000    0.00
 > AIPS 2: DEC          1   -36 21 42.800       1.00       3600.000    0.00
 > AIPS 2: ----------------------------------------------------------------
 > AIPS 2: Coordinate equinox 1950.00
 > AIPS 2: Rest freq      0.000         Vel type: OPTICAL wrt YOU
 > AIPS 2: Alt ref. value  0.00000E+00  wrt pixel    1.00
 > AIPS 2: Maximum version number of extension files of type HI 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 AN is   1
 > AIPS 2: Maximum version number of extension files of type WX is   1
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