[daip] polco problem

[Eric Greisen]

Amanda Kepley wrote:
> Hi,
> 
> I'm trying to use POLCO to correct some polarization maps for bias and 
> am getting some weird error messages. I'm taking a legitimate polarized 
> intensity map and running POLCO with the following parameters:
> 
> AIPS 1: POLCO: Task to correct polarization maps for Ricean bias
> AIPS 1: Adverbs     Values                 Comments
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: INNAME     'N1569.S.R0'            Input image name (name)
> AIPS 1: INCLASS    'POLI'                  Input image name (class)
> AIPS 1: INSEQ         1                    Input image name (seq. #)
> AIPS 1: INDISK        8                    Input image disk drive #
> AIPS 1: OUTNAME    'N1569.S.R0'            Output image name (name)
> AIPS 1: OUTCLASS   'POLCO'                 Output image name (class)
> AIPS 1: OUTSEQ        0                    Output image name (seq. #)
> AIPS 1: OUTDISK       8                    Output image disk drive #
> AIPS 1: PIXSTD     1.720E-05               Sigma of noise on Q or U map
> AIPS 1: PCUT          3                    Blank below PCUT sigma.
> AIPS 1:                                    <= 0 => no blanking
> AIPS 1: OPCODE     ' '                     If 'ZERO', blank with zeros,
> AIPS 1:                                    else use magic blanking
> AIPS 1: BADDISK    *all 0                  Disks to avoid for scratch
>  >go
> 
> sereni> POLCO1: Task POLCO  (release of 31DEC09) begins
> sereni> POLCO1: Create N1569.S.R0  .POLCO .   2 (MA)  on disk  8  cno   30
> sereni> POLCO1: Blanking below   3.00-sigma
> sereni> POLCO1: There are  1.035191E+06 blank pixels in the output image
> sereni> POLCO1: ZOPEN: VOLUME NUMBER =      0 OUT OF RANGE
> sereni> POLCO1: CATKEY: ERROR    3 OPENING THE HEADER FILE
> sereni> POLCO1: CATKEY: ERROR ON OPCODE=ALL  VOL,CNO  0    28
> sereni> POLCO1: Appears to have ended successfully
> sereni> POLCO1: serenity 31DEC09 TST: Cpu=      0.1  Real=      0  
> IO=        13
> 
> I've tried this with a couple of difference files on a couple of 
> different AIPS disks, but get the same ZOPEN, CATKEY error messages. The 
> output image appears to be okay though. It this a problem with my 
> installation or with AIPS itself? I'm running the latest MNJ version of 
> AIPS.

It looks like KEYCOP was called 2 lines too soon - before the disk 
numbers were known.  I moved the call and it should work following 
tomorrow's MNJ.

Thanks,

Eric Greisen