Electroformed Front-end at 100 Ghz for Radio-astronomical Applications
نویسنده
چکیده
R. BANHAM AND G. VALSECCHI Media Lario S.r.l.i. Lecco, Italy L. LUCCI, G. PELOSI AND S. SELLERI University of Florence Florence, Italy V. NATALE AND R. NESTI IRA–INAF–Arcetri Astrophysical Observatory Florence, Italy G. TOFANI IRA–INAF–Institute of Radio Astronomy Bologna, Italy The European Southern Observatory (ESO) is an intergovernmental European organization for astronomical research, coordinating many projects. The leading one in radio astronomy is the construction of the Atacama Large Millimeter Array (ALMA),1,2 a project for an interferometer aimed at the study of microwave and sub-millimeter signals coming from space. ALMA is expected to operate in the 30 to 950 GHz band, subdivided into ten sub-bands. It will comprise sixty-four dual reflector antennas that will be located in the Atacama Desert in northern Chile. This millimeter and sub-millimeter instrument will be very helpful in the study of some major challenges in modern astrophysics: the formation and evolution of galaxies and quasars in the early universe and the formation of stars and planets. Due to the excellent atmospheric transparency at the site, the efficiency of the receiving system is of utmost importance; hence, ELECTROFORMED FRONT-END AT 100 GHZ FOR RADIO-ASTRONOMICAL APPLICATIONS
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