1 UV_MAP Make Image from visibilities in a UV table, using gridding+FFT

        UV_MAP makes a map from UV data by gridding the UV data using a con‐
    volving function, and then  Fast  Fourier  Transforming  the  individual
    channels.   UV_MAP can produce one beam per channel or a common beam for
    all channels. In the latter case, the gridding is done only  once,  thus
    neglecting  frequency  change  between  channels; this is of course much
    faster.

    UV_MAP can shift the map center and rotate the image,  by  shifting  the
    phase  tracking  center  and rotating the UV coordinates of the input UV
    table.

    UV_MAP produces an output LMV cube (X, Y, Velocity) and a BEAM image  or
    cube from  the input  UV table.

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

    The  UV  table  name.  Default extension is .UVT.  This UV table will be
    shifted, rotated and sorted if necessary.

2 MAP_NAME$
        TASK\CHARACTER "Map name" MAP_NAME$

    The output map name.  Default extension is .LMV.  A beam  with  the same
    name will be produced with default extension .BEAM.

2 UV_TAPER$
        TASK\REAL      "UV taper (1/e level) [m]" UV_TAPER$[3]

    The 2‐dimensional UV taper: 1/e level along the major axis, and 1/e lev‐
    el along the minor axis, position angle in degrees.

2 WEIGHT_MODE$
        TASK\CHARACTER "Weight mode (NA or UN)" WEIGHT_MODE$

    NAtural (optimum in terms of  sensitivity)  or  UNiform  (usually  lower
    sidelobes)  weighting.  Caution:  UNiform weighting can be dangereous if
    used on data of not god enough quality.

2 MAP_SIZE$
        TASK\INTEGER   "Map size [pixel]" MAP_SIZE$[2]

    Number of pixels in X and Y.  Need not be a power of two, but this would
    be  much  better  for any further image processing. Enter 0,0 to let the
    task find the map size.

2 MAP_CELL$
        TASK\REAL      "Map cell [arc sec]" MAP_CELL$[2]

    The map cell size. It is recommended to use identical values in X and Y.
    A sampling of at least 3 pixel per beam is recommended. Enter 0,0 to let
    the task find the best values.

2 UV_CELL$
        TASK\REAL      "UV cell [m], for unif. weighting" UV_CELL$[2]

    The UV cell size for uniform weighting.  Should be of the order  of half
    the dish diameter, or smaller.

2 ONEBEAM$
        TASK\LOGICAL    "Make  one  beam  (YES),  or  one  per channel (NO)"
    ONEBEAM$

    For spectral line data, specify whether a common beam should be generat‐
    ed  for  all  channels,  or one beam per channel. Selecting one beam per
    channel is not compatible with the mosaic data processing in the MAPPING
    software.

2 WCOL$
        TASK\INTEGER   "Weight channel" WCOL$

    The  channel from which the weight should be taken.  WCOL set to 0 means
    using the central channel.

2 MCOL$
        TASK\INTEGER   "First and Last channel to map" MCOL$[2]

    The first and last channel to be mapped.

2 CONVOLUTION$
        TASK\INTEGER   "Convolution function [0‐5]" CONVOLUTION$

    Select the desired convolution function for gridding  in  the  UV  plane
    Choices are
        0    Default (currently 5)
        1    Boxcar
        2    Gaussian
        3    Sin(x)/x
        4    Gaussian * Sin(x)/x
        5    Spheroidal

2 UV_SHIFT$
        TASK\LOGICAL   "Change map center or map orientation" UV_SHIFT$

    Indicate  whether map center (i.e. phase tracking center) or orientation
    should be modified or not.

2 RA_CENTER$
        TASK\CHARACTER "Map Center RA" RA_CENTER$

    New Right Ascension of map center, to be used if UV_SHIFT$ is YES.

2 DEC_CENTER$
        TASK\CHARACTER "Map Center DEC" DEC_CENTER$

    New Declination of map center, to be used if UV_SHIFT$ is YES.

2 ANGLE$
        TASK\REAL      "Map Position Angle [deg]" ANGLE$

    Position Angle of the direction which will become the apparent North  in
    the map (used if UV_SHIFT$ is YES).

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