Light beams from the four 8.2-meter primary telescopes that make up the European Southern Observatory’s Very Large Telescope (VLT) at the Paranal Observatory in Atacama, Chile, have been successfully combined in pairs to create interferometric fringes. Three 1.8-meter “outrigger” telescopes will be added to the VLT by 2005. Next year, the first adaptive optics will be installed and will increase the sensitivity by a factor of almost 100.

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