Reading UV tables
Keywords: imager

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Reading UV tables

uv tables are simply read into [rgb]1,0,0IMAGER by magenta`READ UV`. The rest frequency to be used to compute the velocity scale is normally found in the table, but can be overridden using the magenta`READ /FREQUENCY` option. By default, the whole table is read, but a subset of the channels can be read using the magenta`READ /RANGE` option (with the velocity scale as above).

UVFITS file may even be read directly as uv tables, applying the same conversion methods than the violet`fits_to_uvt` script. However, this capability is still only partially supported. While it will work for basic (i.e. in memory) handling, full access to the uv data is only possible on the native format: this includes subset selection, as well as direct operations on uv data files through the magenta`/FILE` option of many magenta`UV_...` commands.