April 2011 — A European ALMA antenna takes a ride on a transporter
A European Atacama Large Millimeter/submillimeter Array (ALMA) antenna takes a ride on Lore, one of the ALMA transporters, at the 2900-metre altitude Operations Support Facility in the Chilean Andes. This took place on 23 June 2010, and was the first time that European antennas were lifted with the transporters, a procedure that was fully successful, with two antennas moved in a single day.
The first two European antennas for ALMA were moved to two new outdoor foundation pads in order to perform tests of their dish surface accuracy. In this process, known as holography, the antennas observed the signals from a special transmitter located on a nearby tower.
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