FEATHER

        [ADVANCED\]FEATHER [?] [/FILE Combined HIGHRes LOWres] [/REPROJECT]

      Combines  a  data  cube containing High resolution data (HIGHres) with one
    containing the short spacing data (LOWres). Automatic reprojection and  spa-
    tial  resampling  of the LOWres data may be done if the option /REPROJECT is
    specified.

      The method is to hybridize in the UV plane the data,  retaining  short  UV
    spacings  from  LOWres  and  long UV spacings from HIGHres. It is controlled
    mainly by variable FEATHER_RADIUS, the transition radius, and  FEATHER_EXPO,
    an exponent controlling the transition sharpness

    Other variables allow some flux re-scaling or verification.

      FEATHER ?  will list the input parameters