Qualla: Large Latin American Millimeter Array

Large Latin American Millimeter Array: Introduction

Sun, 21 Jun 2026 00:00:00 GMT

Photo credit Guigue, CC BY-SA 3.0. The acronym hides a joke. LLAMA stands for Large Latin American Millimeter Array, yet there is no array here at all, just one twelve-meter dish balanced on a barren ridge of the Puna at Alto Chorrillos. The name borrows from the Quechua word for the woolly camelid that picks its way across these slopes, and the astronomers who chose it knew the contradiction. A single antenna can still join a network. Linked by atomic clocks to telescopes thousands of kilometers away, this lone dish becomes one eye in an array that spans continents.

Image: Guigue | CC BY-SA 3.0

Large Latin American Millimeter Array: Why Build Here, of All Places

Sun, 21 Jun 2026 00:00:00 GMT

Photo credit Guigue, CC BY-SA 3.0. At 4,850 meters above sea level, the air is too thin to breathe comfortably and almost too thin to hold water. That is precisely the point. Water vapor in the atmosphere swallows the millimeter and submillimeter wavelengths that LLAMA is built to detect, and the Puna of Salta is ...

Image: Guigue | CC BY-SA 3.0

Large Latin American Millimeter Array: A Telescope Built From a Handshake

Sun, 21 Jun 2026 00:00:00 GMT

Photo credit Apollo 8 crewmember Bill Anders, Public domain. LLAMA is the product of two nations deciding to split a bill down the middle. Argentina and Brazil share the roughly twenty million dollars of construction cost, the operating budget, and the observing time in equal halves, a rare arrangement in big science. The idea surfaced in ...

Image: Apollo 8 crewmember Bill Anders | Public domain

Large Latin American Millimeter Array: Listening to the Cold and the Burning

Sun, 21 Jun 2026 00:00:00 GMT

Photo credit Guigue, CC BY-SA 3.0. The same instrument that can stare at the Sun can also strain to hear gas clouds at the edge of the observable universe. LLAMA's German-built dish, modeled on the antennas of the nearby ALMA observatory, will carry up to six cryogenically cooled receivers, each chilled to within ...

Image: Guigue | CC BY-SA 3.0

Large Latin American Millimeter Array: The Long Road to First Light

Sun, 21 Jun 2026 00:00:00 GMT

Photo credit Guigue, CC BY-SA 3.0. Building anything at this altitude is an exercise in patience. Crews work short shifts against the cold, the wind, and the headaches that come with too little oxygen. The antenna, fabricated by a German firm that also built dishes for ALMA, was slated for assembly in 2022, with t...

Image: Guigue | CC BY-SA 3.0