Shadow

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3.4.2.4 Shadow

mode                =   ’shadow’        #  Flagging mode (list/manual/clip/shadow/quack/
                                        #  elevation/tfcrop/rflag/extend/unflag/summary)
...
     tolerance      =        0.0        #  Amount of shadow allowed (in meters)
     addantenna     =         ’’        #  File name or dictionary with additional antenna names,
                                        #   positions and diameters

This options flags shadowed antennas, i.e. when one antenna blocks part of the aperture of a second antenna that is behind the first one. Shadowing can be gradual and the criterion for a shadow flag is when a baseline is shorter than radius₁ + radius₂ -tolerance (where the radii of the antennae are taken from the MS antenna subtable). addantenna may be used to account for shadowing when antennas are not listed in the MS but are physically present. Please read the tflagdata inline help for the syntax of this option.

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