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Future Arrays for Radio Astronomy and Space Communications
Date: Monday, August 3, 2009
Time: 4:00 PM
Location: 125 Steele, Caltech
Speakers: Sander Weinreb & Steve Padin
Future Arrays for Radio Astronomy and Space Communications Sander Weinreb, Principal Scientist, JPL, and Faculty Associate, Caltech EE Department
Much of radio astronomy has been performed with single-pixel telescopes that measure one point in the sky at a time. During the past 30 years arrays of telescopes such as the VLA and CARMA have been developed to provide many-pixel images. Future directions of array development to be introduced in this presentation are: 1) the Square KM Array (SKA); 2) combined use of future large arrays for radio astronomy and space communications; 3) phased-array feeds for much larger field of view; 4) wafer-scale integration for large format spectral imaging at millimeter and submillimeter wavelengths; and 5) new transistors and integrated circuits to make this all affordable. The role of Caltech/JPL in these developments will be discussed.
CCAT - Cornell Caltech Atacama Telescope Steve Padin, Senior Research Associate, Caltech
CCAT is a new, 25 m diameter, submillimeter wave telescope. It will be built on a high, dry site in the Atacama Desert. CCAT will probe the growth of structure over cosmic time, from the first galaxies to nearby star and planet forming regions. CCAT will be a powerful survey instrument, taking full advantage of recent advances in submillimeter detector arrays, particularly MKID arrays, CCAT's instrument suite will include 100k-pixel multi-band cameras, and multi-object spectrometers that can observe of order a hundred sources simultaneously.