Fig. 1.
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EHT 2017 and 2018 (u,v)-coverage. The plot shows observations from April 10, 2017 (gray) and April 21, 2018 (blue and orange). Both are at 229.1 GHz, which corresponds to the hi-band and band 4 in EHT 2017 and 2018, respectively. Orange points highlight the GLT baselines. Red circles show the coverage gaps in 2017, and dashed circles mark the 25 and 50 μas resolution.
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