taper_visibility_tukey

ska_sdp_func_python.imaging.weighting.taper_visibility_tukey(vis, tukey=0.1)

Taper the visibility weights.

This algorithm is present in WSClean.

See https://sourceforge.net/p/wsclean/wiki/Tapering.

Tukey, a circular taper that smooths the outer edge set by -maxuv-l inner-tukey, a circular taper that smooths the inner edge set by -minuv-l edge-tukey, a square-shaped taper that smooths the edge set by the uv grid and -taper-edge.

These are cumulative. If You can reset the imaging_weights using ska_sdp_func_python.imaging.weighting.weight_visibility.

Parameters:

vis – Visibility with imaging_weight’s to be tapered

Returns:

Visibility with imaging_weight column modified