1 UV_SUBTRACT Subtract continuum averaged visibilities from a line UV table

        UV_SUBTRACT subtracts a time average continuum UV table from a spec‐
    tral line one, typically to provide continuum‐free spectral  line  maps.
    Caution:  it  will  not work if the continuum source is too complex, be‐
    cause of the time averaging.

2 UV_TABLE$
        TASK\CHARACTER "UV table" UV_TABLE$

    UV table from which a continuum must be subtracted.
2 SELF$
        TASK\CHARACTER "UV table used as continuum" SELF$

    Reference UV table
2 DTIME$
        TASK\REAL"The smoothing time constant in seconds" DTIME$

    Integration time to derive continuum value. Signal  to  noise  MUST   BE
    SUFFICIENT  not to add noise in the spectral line UV table. But integra‐
    tion time should be short enough  to  avoid  smearing  of  spatial  fea‐
    tures..ti ‐4
2 WCOL$
        TASK\INTEGER "The continuum channel" WCOL$

    If  the  reference  SELF$   is   a  spectral  line  UV  table,  spectral
    channel to be used to define the continuum.
2 SUB$
        TASK\REAL "Fraction of the continuum source to subtract" SUB$

    Typically 1 or 0, to remove or not the continuum source.
1 ENDOFHELP


































