[daip] IMAGR issue

Eric Greisen egreisen at nrao.edu
Fri Jun 10 10:45:26 EDT 2011


Avanti Tilak wrote:
> Hi Eric,
> 
> I tried running it with SOURCES=' ', it gave the same error message.
> 
> Here is the output from IMHEAD.
> 
>> imhead
> AIPS 1: Image=J0155+04  (UV)         Filename=J0155+0438  .SPLIT .   1
> AIPS 1: Telescope=VLBA               Receiver=VLBA
> AIPS 1: Observer=BO015               User #= 1000
> AIPS 1: Observ. date=28-FEB-2003     Map date=06-JUN-2011
> AIPS 1: # visibilities    113887     Sort order  TB
> AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  TIME1  BASELINE
> AIPS 1:            INTTIM  GATEID  CORR-ID
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: Type    Pixels   Coord value     at Pixel     Coord incr   Rotat
> AIPS 1: COMPLEX      3   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         1   1.6674588E+09       1.00  1.6000000E+07    0.00
> AIPS 1: IF           1   1.0000000E+00       1.00  1.0000000E+00    0.00
> AIPS 1: RA           1    01 55 03.726       1.00       3600.000    0.00
> AIPS 1: DEC          1    04 38 30.347       1.00       3600.000    0.00
> AIPS 1: ----------------------------------------------------------------
> AIPS 1: Coordinate equinox 2000.00
> 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 NX is   1
> 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 OB is   1
> AIPS 1: Maximum version number of extension files of type WX is   1
> AIPS 1: Maximum version number of extension files of type AN is   1
> AIPS 1: Keyword = 'OLDRFQ  '  value =  1.65949000D+09
> AIPS 1: Keyword = 'SUBARRAY'  value =            1
> 
> 
> Avanti
> 
> 
> On Jun 9, 2011, at 3:17 PM, Eric Greisen wrote:
> 
>> Avanti Tilak wrote:
>>> Hi Eric,
>>> This is a continuum data set. I am attaching a text file with the output from uvprt. Thanks.
>> The IMHEAD would have helped - I wonder if the source name has been truncated.  Try IMAGR with SOURCES=' ' since this is a single-source SPLIT file.
>>
>> Eric Greisen
>>
> 

I suspect that your CELLSIZE is way too large.

Try
task = 'setfc'
imsize = 0
cellsi = 0
bparm = 0.003,0

and see what it suggests for a cellsize.

ERic Greisen




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