UV_PREVIEW Output

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UV_PREVIEW Output

              UV_PREVIEW returns the list  of  possible  line  channels  through
        variable  PREVIEW%CHANNELS.  If  no  line emission was identified at any
        scale, the list is empty and the variable does not exist.

        With this list, the user can compute the continuum image, using commands
        UV_FILTER /CHANNELS PREVIEW%CHANNELS (or simply UV_FILTER), then UV_CON-
        TINUUM and the usual UV_MAP and CLEAN. Alternatively, the user can  fil-
        ter out the continuum emission using UV_BASELINE.

        If  a  catalog  is  present, UV_PREVIEW also creates several other vari-
        ables.  PREVIEW%FOUND indicates the spectral line falling  in  the  fre-
        quency  range,  while  PREVIEW%DETECTED  indicates  the dectected lines.
        These two structures have the following variables, e.g. for FOUND:
        PREVIEW%Found%FREQ     The line frequencies
        PREVIEW%Found%LINES    The line names
        PREVIEW%Found%SPECIES  The molecule name
        PREVIEW%EDGES and  PREVIEW%FREQUENCIES contains the start and end
        channels (for %EDGES, resp. frequencies for %FREQUENCIES) of each
        contiguous range of channels in PREVIOUS%CHANNELS. These variables
        are used for line identification and imaging in the
          @ image_lines
        script.

        Finally, UV_PREVIEW returns in PREVIEW%FMIN PREVIEW%FMAX  the  frequency
        coverage,  and  in  PREVIEW%FREQ  the  rest frequency of the most likely
        spectral line in the window, and in PREVIEW%LINES its name.  If no spec-
        tral  line  has  been  identified, PREVIEW%FREQ is just the mean of PRE-
        VIEW%FMIN and PREVIEW%FMAX, and PREVIEW%LINES does not exist.