FEATHER_RANGE

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FEATHER_RANGE

              Real FEATHER_RANGE[2]

          FEATHER_RANGE[2] defines a region of "overlapping"  UV  spacings  over
        which  the  ratio  of LOWres and HIGHres visibilities can be checked. If
        the flux scale is correct, this ratio should be  1.   FEATHER_RANGE  de-
        faults to FEATHER_RADIUS/1.15 and FEATHER_RADIUS*1.15.

          The  computed ratio is only a guide, and not used in the algorithm.  A
        proper definition of FEATHER_RANGE requires knowledge of the initial  UV
        coverage  of  the  HIGHres and LOWres data sets. If FEATHER_RANGE is too
        large, the computed ratio has no real meaning.