UV_FILTER
Keywords: imager

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UV_FILTER

            [CLEAN\]UV_FILTER [/RESET] [/ZERO] [/CHANNELS Channel_List]
          [/FREQUENCY List Of Frequencies] [/RANGE Min Max [TYPE]]
          [/VELOCITY List of Velocities] [/WIDTH Width [TYPE]]
          [/FILE FileIn [FileOut]]

        "Filter"  line  emission,  by  flagging  the corresponding channels. The
        channels can be specified either by the /FREQUENCY or /VELOCITY  options
        in  combination with the /WIDTH option, or by a channel list with /CHAN-
        NELS or a range (of channels, frequencies or velocities) with /RANGE.

        By default, channels to be filtered are flagged (weights becoming  nega-
        tive).  Option /ZERO can be used to erase them: weights and visibilities
        are set to zero, see HELP UV_FILTER /ZERO. On the contrary, option  /RE-
        SET can be used to unflag them (and is thus conflicting with option /ZE-
        RO).

        The command works on the current UV data, unless  the  option  /FILE  is
        specified.

        With  no  options (except possibly /FILE and /ZERO), the command behaves
        as UV_FILTER /CHANNELS PreviewChannels. See UV_PREVIEW for details.

Subsections

- UV_FILTER /CHANNELS
- UV_FILTER /FILE
- UV_FILTER /FREQUENCY
- UV_FILTER /RANGE
- UV_FILTER /RESET
- UV_FILTER /VELOCITY
- UV_FILTER /WIDTH
- UV_FILTER /ZERO