Spatial frequency coverage (Fourier domain or uv-coverage) of the VLBI visibility data for the target source at 1.6 GHz. The coverage is plotted in Megawavelength (Mλ) units, referring to spatial frequencies of B_l,m/(λ_obs × 10⁶), where B_l,m is the projected baseline length for a given pair of antennas (l,m). Baselines to Hartebeesthoeck, covering a range of 36–48.8 Mλ, are not shown. The smallest spatial frequency sampled is 10^-2 Mλ, corresponding to  ≈ 2, but the central gap in the uv-coverage results in the structural sensitivity substantially reduced for scales larger than .