divide_visibility

ska_sdp_func_python.visibility.operations.divide_visibility(vis: Visibility, modelvis: Visibility)

Divide visibility by model forming visibility for equivalent point source.

This is a useful intermediate product for calibration. Variation of the visibility in time and frequency due to the model structure is removed and the data can be averaged to a limit determined by the instrumental stability. The weight is adjusted to compensate for the division.

Zero divisions are avoided and the corresponding weight set to zero.

Parameters:

• vis – Visibility to be divided

• modelvis – Visibility to divide with

Returns:

Divided Visibility