Author_Institution :
Nat. Astron. Obs. of Japan, Mitaka, Japan
Abstract :
The Atacama Large Millimeter Array (ALMA) is a millimeter and submillimeter astronomical observatory being built in northern Chile. The array consists of a 12-m array (50 12-m antennas) and of the Atacama compact array (4 12-m antennas and 12 7-m antennas). The ALMA antennas are required to meet very stringent technical specification such as pointing/tracking accuracy, fast motion capability, and surface accuracy etc. under operating conditions. The paper describes the design features and summarizes major performance of the ALMA antennas.
Keywords :
radiotelescopes; submillimetre astronomy; ALMA antenna; Atacama Large Millimeter Array; Atacama compact array; size 12 m; size 7 m; submillimeter astronomical observatory; Accuracy; Antenna accessories; Antenna arrays; Arrays; Holography; Reflector antennas;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6051256
