Tootfinder

Adaptive Uniform Weighting: Pre-conditioning to Improve Image Fidelity
Robert Braun
https://arxiv.org/abs/2508.12869 https://arxiv.org/pdf/2508.12869

Adaptive Uniform Weighting: Pre-conditioning to Improve Image Fidelity
The "dirty" image made by direct Fourier inversion of visibility data is an important first step in inteferometric imaging. This is where the "deconvolution problem" is defined and the degree to which that problem is either well- or ill-conditioned has direct consequences for the ultimate image fidelity that is achieved in practise. An under-utilised degree of freedom during Fourier imaging is the relative weights that are assigned to the visibility data. We explore the circumstances under whic…