[daip] AIPS - Help

[Eric Greisen]

Murad Hamidouche writes:

 > Yeah it is a multi-source, I tried 'CLIPM' it worked now but I had to run
 > it a couple times to flag all the data I wanted, i.e. > 2 Jy (so I went up
 > to FG 5).

    Good - be sure to specify FLAGVER correctly to get the highest.

 > 
 > > What is the image?  IMAGR would make an ra-dec image on disk and an
 > > image of the dirty beam as well.  Then you run KNTR to make a plot
 > > file and LWPLA to make a POstScript file.  These are all explained in
 > > Chapter 6 of the CookBook.
 > >

 > AIPS 1: Maximum version number of extension files of type HI 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 NX 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 FQ is   1
 > AIPS 1: Maximum version number of extension files of type CL is   4
 > AIPS 1: Maximum version number of extension files of type TY 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 OF is   1
 > AIPS 1: Maximum version number of extension files of type FG is   5
 > AIPS 1: Maximum version number of extension files of type SN is   2
 > AIPS 1: Keyword = 'CORRMODE'  value = '        '
 > AIPS 1: Keyword = 'VLAIFS  '  value = 'ABCD    '
 > 
 > 
 > I applied 'SPLIT' to make a single source, the 'SPLIT' run
 > correctly but the header of the output looks weird to me there're some
 > tables missing, but didn't get any warning or error message. This its
 > header looks:
 > 
 > AIPS 1: Image=04588+29  (UV)         Filename=04588+29506 .SPLIT .   1
 > AIPS 1: Telescope=VLA                Receiver=VLA
 > AIPS 1: Observer=AH871               User #=    2
 > AIPS 1: Observ. date=17-APR-2005     Map date=29-SEP-2005
 > AIPS 1: # visibilities    829162     Sort order  TB
 > AIPS 1: Rand axes: UU-L-SIN  VV-L-SIN  WW-L-SIN  BASELINE  TIME1
 > 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   4.3314900E+10       1.00  5.0000000E+07    0.00
 > AIPS 1: IF           2   1.0000000E+00       1.00  1.0000000E+00    0.00
 > AIPS 1: RA           1    04 58 46.266       1.00       3600.000    0.00
 > AIPS 1: DEC          1    29 50 36.999       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    1.00
 > 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 AN 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 OF is   1

The FG CL SN tables and others have now been applied and so they are
deleted.  This looks fine to me.

 > And when I try IMAGR on this single-source file it doesn't work ?

What STOKES value do you use?  The above should be just fine.

Eric Greisen