Sgr A* (u, v) coverage of the 2017 April 7 EHT observations. Seven scans on Sgr A* were added to the original schedule at the beginning of the observation, brought by the introduction of the NOEMA array and the African stations. In blue, the coverage obtained with the 2022EHT array. The contributions of the AMT and CNI baselines are shown in red and in brown, respectively. The AMT adds long northeast and southwest baselines increasing the EHT resolution, while CNI offers shorter baselines to detect large-scale emission and constrain the source extent.