Heterodyne instrumentation at the CSO

Jacob W. Kooi; P. L. Schaffer; Bruce Bumble; Rick LeDuc; Thomas G. Phillips

doi:10.1117/12.317362

31 July 1998 Heterodyne instrumentation at the CSO

Jacob W. Kooi, P. L. Schaffer, Bruce Bumble, Rick LeDuc, Thomas G. Phillips

Proceedings Volume 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes; (1998) https://doi.org/10.1117/12.317362
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

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.

Citation Download Citation

Jacob W. Kooi, P. L. Schaffer, Bruce Bumble, Rick LeDuc, and Thomas G. Phillips "Heterodyne instrumentation at the CSO", Proc. SPIE 3357, Advanced Technology MMW, Radio, and Terahertz Telescopes, (31 July 1998); https://doi.org/10.1117/12.317362

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