National Radio Astronomy Observatory eNews: "New Hydrogen Maser Installed at the Large Millimeter Telescope for High Sensitivity mm-wave Very Long Baseline Interferometry"
"At 1.3mm wavelength, the LMT will join other telescopes worldwide in the Event Horizon Telescope array to image the event horizons of SgrA* and the supermassive black hole at the center of the nearby elliptical galaxy M87."
By Shep Doeleman for National Radio Astronomy Observatory eNews