Welcome to ALMAxLeiden

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The Great Telescope Adventure

Start your astronomy walking tour through Leiden from the Old Observatory!

Tour information: 5.2km walk with 1.5 hour duration starting at the Old Observatory.
Het Grote Telescoopavontuur

Begin je sterrenkundige wandeling door Leiden vanaf de Oude Sterrewacht!

Tourinformatie: 5,2 km wandelen met een duur van 1,5 uur vanaf de Oude Sterrewacht.

About this project

ALMA, the Atacama Large Millimeter/submillimeter Array, is an array of 66 radio telescopes located in the Atacama Desert in northern Chile. In essence, ALMA antennas combine their signals to work like one very large telescope through a technique called interferometry. ALMA is an international collaboration between Europe, North America, and East Asia, in cooperation with the Republic of Chile. ALMA unravels the mysteries of the universe from distant galaxies to moons forming around new planets.

The largest extent of ALMA is comparable to the size of Leiden. While on the ALMAxLeiden walking tours, you will be introduced to some details about ALMA and the basic concept of interferometry, to experience what it's like to observe the universe with a telescope the size of Leiden. The tours contain astronomy trivia and fun facts.

The ALMAxLeiden project was conceived and designed by Allegro, The ALMA Regional Centre node in The Netherlands, located at the Leiden Observatory and Leiden University.