[daip] Difficulty with fring

[Steven.Tingay at atnf.CSIRO.AU]

Hi,

I'm attempting to reduce data from a space VLBI observation, W030f1,
observed June 28, 2000.  It is a full polarisation observation, however
I am only interested in the LL data.  When I run FRING to fringe-fit,
using standard inputs, the inputs I have used many times to fringe-fit
similar data, I get the following error message:

FRING1: Task FRING  (release of 31DEC99) begins
FRING1: You are using a non-standard program
FRING1: FNDPOL: Requested Stokes HALF incompatible with actual
FRING1: Purports to die of UNNATURAL causes
FRING1: morpheus     31DEC99 TST: Cpu=       0.0  Real=       0

The data have been sorted and indexed.  Amplitude calibration tables have
been produced, but I get the error message regardless of whether I apply
them or not in FRING.  Here is the header information for the data:

AIPS 1: Image=MULTI     (UV)         Filename=W030F1      .MSORT .   1
AIPS 1: Telescope=VLBA               Receiver=VLBA
AIPS 1: Observer=W030                User #=  803
AIPS 1: Observ. date=28-JUN-2000     Map date=10-NOV-2000
AIPS 1: # visibilities    451222     Sort order  TB
AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  TIME1  BASELINE
AIPS 1:            SOURCE  FREQSEL  INTTIM  GATEID  CORR-ID  WEIGHT
AIPS 1:            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  -2.0000000E+00       1.00 -1.0000000E+00    0.00
AIPS 1: FREQ       128   4.8000000E+09       1.00  1.2500000E+05    0.00
AIPS 1: IF           2   1.0000000E+00       1.00  1.0000000E+00    0.00
AIPS 1: RA           1    00 00 00.000       1.00       0.000000    0.00
AIPS 1: DEC          1    00 00 00.000       1.00       0.000000    0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Maximum version number of extension files of type HI is   1
AIPS 1: Maximum version number of extension files of type AT is   1
AIPS 1: Maximum version number of extension files of type IM is   1
AIPS 1: Maximum version number of extension files of type CT is   1
AIPS 1: Maximum version number of extension files of type MC is   1
AIPS 1: Maximum version number of extension files of type OB is   1
AIPS 1: Maximum version number of extension files of type GC is   3
AIPS 1: Maximum version number of extension files of type TY is   3
AIPS 1: Maximum version number of extension files of type WX is   1
AIPS 1: Maximum version number of extension files of type PC is   2
AIPS 1: Maximum version number of extension files of type FQ 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 SU is   1
AIPS 1: Maximum version number of extension files of type CQ is   1
AIPS 1: Maximum version number of extension files of type FG is   1
AIPS 1: Maximum version number of extension files of type CL is   3
AIPS 1: Maximum version number of extension files of type NX is   1
AIPS 1: Maximum version number of extension files of type SN is   2

Can you offer any suggestions as to how I should proceed with these data?

Regards,

Steven Tingay