Atacama Submillimeter Telescope Experiment

The Atacama Submillimeter Telescope Experiment (ASTE) is a 10m antenna built by Mitsubishi Electric as a preprototype for ALMA.

Atacama Submillimeter Telescope Experiment
Atacama Submillimeter Telescope Experiment
Alternative namesASTE
Part ofLlano de Chajnantor Observatory 
Location(s)Atacama Desert
Coordinates22°58′17″S 67°42′10″W
Altitude4,800 m (15,700 ft)
Wavelength0.1 mm (3.0 THz)-1.0 mm (300 GHz)
First light2004 
Telescope styleradio telescope 
Diameter10 m (32 ft 10 in)
Websitealma.mtk.nao.ac.jp/aste/
Location of Atacama Submillimeter Telescope Experiment
Related media on Wikimedia Commons

The ASTE was deployed to its site on Pampa La Bola, near Cerro Chajnantor and the Llano de Chajnantor Observatory in northern Chile.[1] The antenna shows excellent performance including a surface accuracy of 19 μm (0.00075 in) r.m.s.[2] The telescope is remotely controllable from multiple sites through satellite connections and the Internet. It is operated by the National Astronomical Observatory of Japan and the University of Tokyo, Nagoya University, and Osaka Prefecture University, in cooperation with the Universidad de Chile.

Initially operating at 240GHz using a focal-plane bolometer array, the telescope was upgraded in 2018 with a heterodyne receiver system operating at 345 GHz and 460 GHz.[3]

References
  1. Ezawa, Hajime; Kawabe, Ryohei; Kohno, Kotaro; Yamamoto, Satoshi (2004-09-28). Oschmann, Jr., Jacobus M. (ed.). "The Atacama Submillimeter Telescope Experiment (ASTE)". USA: 763. doi:10.1117/12.551391. Cite journal requires |journal= (help)
  2. Kohno, K. "The Atacama Submillimeter Telescope Experiment". The Cool Universe: Observing Cosmic Dawn, ASP Conference Series, Vol. 344, Proceedings of the conference held 4–8 October 2004 in Valparaiso, Chile. Bibcode:2005ASPC..344..242K.
  3. "The new heterodyne receiver system for the ASTE radio telescope: three-cartridge cryostat with two cartridge-type superconducting receivers". doi:10.1117/12.2313087. Cite journal requires |journal= (help)


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