[daip] DOFARS/FARS

[Eric Greisen]

On 01/13/2015 07:14 AM, Lawrence Rudnick wrote:
> Eric --
>
> couple of problems.
>
> i'm using the residual Q,U images from RMFIT and want to run them
> through FARS.
>
> first problem is that if i run dofars on this, it runs trans, even
> though the FQID axis is first.  it uses transc '312' which of course
> doesn't produce useful output.
>
> second problem is if i just try to run fars directly.  then i get the
> following error message.
>
> FARS 1 08:05:14 Task FARS   (release of 31DEC15) begins
> FARS 1 08:05:14 TABINI: REQUESTED FQ FILE   1 DOES NOT EXIST
> FARS 1 08:05:14 FARS will use the first axis of header
> FARS 1 08:05:14 FQINI: ERROR   1 FROM TABINI OPCODE = READ
> FARS 1 08:05:14 FQINI: ERROR INITIALIZING FREQUENCY TABLE FOR READ
> FARS 1 08:05:14 Purports to die of UNNATURAL causes
> FARS 1 08:05:14 mazel        31DEC15 TST: Cpu=       0.0  Real=       0
>
>
> attached is the QRESID header
>
> -- AIPS 1: Image=A2256     (MA)         Filename=A2256ALLREL .QRESID.   4
> AIPS 1: Telescope=EVLA               Receiver=EVLA
> AIPS 1: Observer=Frazer O            User #= 2256
> AIPS 1: Observ. date=29-JUL-2010     Map date=13-JAN-2015
> AIPS 1: Pixel type: FLOATING         Magic value blanking
> AIPS 1: Minimum=-1.29141740E-03      Maximum= 1.28728780E-03 JY/BEAM
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
> AIPS 1: FQID        94   1.0000000E+00       1.00  1.0000000E+00    0.00
> AIPS 1: RA---SIN   343    17 03 43.500     104.80         -2.000    0.00
> AIPS 1: DEC--SIN   363    78 39 60.000      55.00          2.000    0.00
> AIPS 1: STOKES       1   2.0000000E+00       1.00  1.0000000E+00    0.00
> AIPS 1: FREQ         1   1.0160000E+09       1.00  1.0000000E+07    0.00
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: Coordinate equinox 2000.00
> AIPS 1: Map type=NORMAL              Number of iterations=   24333
> AIPS 1: Conv size=   6.00 X   6.00   Position angle=   0.00
> AIPS 1: Rest freq      0.000         Vel type: OPTICAL wrt YOU
> AIPS 1: Alt ref. value  0.00000E+00  wrt pixel    0.00
> AIPS 1: Maximum version number of extension files of type RM is   1
> AIPS 1: Maximum version number of extension files of type HI is   1

1. DOFARS is not to be used all the time - only when appropriate.

2. RMFIT should copy any FQ table to the output file - a bug I will now 
try to fix.  You can use TACOP to work around this for the moment.

Eric Greisen