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POINTING

                  OBS\POINTING [PSEUDO] [/ANTENNA A1 ...  An]
         [/FAST] [/LENGTH Length] [/AZIMUT +-Az] [/ELEVATION +-El]

         In  INTERferometric  mode,  starts  an   interferometric   pointing
    measurement   using   the   correlators in cross-correlation mode. Three
    or more antennas must be connected, or one must be fixed.  A1 ...  An is
    the list of antennas  to move (default:  all antennas moved).

    If argument PSEUDO is specified,  the  pointing  is  done  in  ``pseudo-
    continuum''   mode,  i.e.  in  auto  correlation.  One  subband  of  the
    correlator should have been selected to match a strong spectral line  in
    this case.

         Four drifts are made (Az increment, Az decrement, El increment,  El
    decrement).  The command is forbidden in OPTICAL and TEST modes.  Option
    /FAST can be used to  scan  twice  faster than  usual.   Option  /LENGTH
    can  be  given  to  modify the scanning length: the argument is actually
    half the scanning length in arcseconds.  Options /AZIMUT and  /ELEVATION
    can  be  used  to select which drifts are actually performed among the 4
    possible: +Az, -Az, +El, -El.


Gildas manager
2002-02-04