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This new 1.3 mm VLBI detection confirms that short-wavelength VLBI of Sgr A* can and will be used to directly probe the event horizon of this black hole candidate: in short, Sgr A* is the right object, VLBI is the right technique, and this decade is the right time.
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The campaign to capture the first-ever image of a black hole has begun.

From today (April 5) through April 14, astronomers will use a system of radio telescopes around the world to peer at the gigantic black hole at the center of the Milky Way, a behemoth called Sagittarius A* (Sgr A*) that's 4 million times more massive than the sun.
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Though the current observing campaign will be over soon, it will take a while for astronomers to piece together the images. For starters, so much information will be collected by the participating telescopes around the world that it will be physically flown, rather than transmitted, to the central processing facility at the Massachusetts Institute of Technology's Haystack Observatory.

Then, the data will have to be calibrated to account for different weather, atmospheric and other conditions at the various sites. The first results from the campaign will likely be published next year, EHT team members said.