Standard Interferometry

To fit the voltage beams to the gain amplitudes, at least three dishes are required for the gain calibration. Also, the pipeline requires all dishes to be moved simultaneously during a pointing offset calibration scan. The primary beam modelled by a 2D Gaussian is fit to the un-normalised gain (G terms) amplitudes from all the scans.

A sample nine-point scan with the MeerKAT array showing the on-sky offsets in cross-elevation and elevation is shown below

The pointing offsets in cross-elevation and elevation for each dish in the interferometric array are calculated following the functionality diagram below