Behind the Scenes: Visiting the ALMA Observatory

Everything at ALMA must be put into place to the most exacting measurements—less than the width of a human hair. Which is to say the dish is not simply lowered onto the antenna base and bolted on. It’s a very slow, methodical process. ALMA is clearly a place where nobody ever says, “Oops!” (John Stoke, NRAO/AUI/NSF)

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