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Proceedings Paper

Heterodyne instrumentation at the CSO
Author(s): Jacob W. Kooi; P. L. Schaffer; Bruce Bumble; Rick LeDuc; Thomas G. Phillips
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Paper Abstract

The Caltech Submillimeter observatory (CSO) is one of the World's premier submillimeter telescopes. It consists of a 10.4 meter diameter Leighton radio dish situated in compact dome near the summit of Mauna Kea, Hawaii. The telescope has been operating under a contract from the National Science Foundation on a regular basis since 1988. For the first time heterodyne Superconducting-Insulating-Superconducting (SIS) receivers with a 1 GHz intermediate frequency (IF) are available for the entire 180 - 950 GHz Submillimeter band. To enhance the extra-galactic capabilities of the observatory and to allow interferometry with the upcoming Submillimeter Array (SMA) project, we are actively working towards upgrading all heterodyne instruments with a 3 GHz IF bandwidth. Concurrent to the planned IF upgrade, we are constructing a dual polarization beam switching 345 GHz extra-galactic receiver, also with a 3 GHz IF bandwidth. Ideally, this instrument will give the CSO a factor of 8 improvement in integration time over the current 345 GHz receiver, and will be ideally suited for the study of highly red-shifted extra-galactic sources.

Paper Details

Date Published: 31 July 1998
PDF: 11 pages
Proc. SPIE 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes, (31 July 1998); doi: 10.1117/12.317362
Show Author Affiliations
Jacob W. Kooi, California Institute of Technology (United States)
P. L. Schaffer, California Institute of Technology (United States)
Bruce Bumble, Jet Propulsion Lab. (United States)
Rick LeDuc, Jet Propulsion Lab. (United States)
Thomas G. Phillips, California Institute of Technology (United States)

Published in SPIE Proceedings Vol. 3357:
Advanced Technology MMW, Radio, and Terahertz Telescopes
Thomas G. Phillips, Editor(s)

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