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The Atacama Pathfinder Experiment (APEX) telescope is a 12-metre telescope, located at 5100 m altitude on the arid plateau of Chajnantor in the Chilean Andes and operated by ESO. APEX operates at millimetre and submillimetre wavelengths. APEX is the largest, single dish, submillimetre-wave telescope operating in the southern hemisphere.  It is a collaboration between the Max Planck Institute for Radio Astronomy, the Onsala Space Observatory and ESO. APEX is a “pathfinder” for ALMA which will find many targets that ALMA will be able to study in extreme detail.  

Observing with APEX allows us to study cold dust and gas in our own Milky Way and in distant galaxies. Tracing the thermal continuum emission and analysing high frequency spectral lines improve our understanding of the structure and chemistry of planetary atmospheres, dying stars, regions of star formation as well as distant starburst galaxies. Issues from the vast scales of the structure of the Universe down to the physics and chemistry of comets can be addressed.

The UK community has access to APEX via its membership of ESO.

UK Involvement

UK community, via ESO

Last updated: 08 June 2017


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