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Proceedings Paper

New instrumentation for the 1.2m Southern Millimeter Wave Telescope (SMWT)
Author(s): P. Vasquez; P. Astudillo; R. Rodriguez; D. Monasterio; N. Reyes; R. Finger; F. P. Mena; L. Bronfman
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Paper Abstract

Here we describe the status of the upgrade program that is being performed to modernize the Southern 1.2m Wave Telescope. The Telescope was built during early ´80 to complete the first Galactic survey of Molecular Clouds in the CO(1-0) line. After a fruitful operation in CTIO the telescope was relocated to the Universidad de Chile, Cerro Calán Observatory. The new site has an altitude of 850m and allows observations in the millimeter range throughout the year. The telescope was upgraded, including a new building to house operations, new control system, and new receiver and back-end technologies. The new front end is a sideband-separating receiver based on a HEMT amplifier and sub-harmonic mixers. It is cooled with Liquid Nitrogen to diminish its noise temperature. The back-end is a digital spectrometer, based on the Reconfigurable Open Architecture Computing Hardware (ROACH). The new spectrometer includes IF hybridization capabilities to avoid analog hybrids and, therefore, improve the sideband rejection ratio of the receiver.

Paper Details

Date Published: 19 July 2016
PDF: 7 pages
Proc. SPIE 9914, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII, 991428 (19 July 2016); doi: 10.1117/12.2233184
Show Author Affiliations
P. Vasquez, Univ. de Chile (Chile)
P. Astudillo, Univ. de Chile (Chile)
R. Rodriguez, Univ. de Chile (Chile)
D. Monasterio, Univ. de Chile (Chile)
N. Reyes, Univ. de Chile (Chile)
R. Finger, Univ. de Chile (Chile)
F. P. Mena, Univ. de Chile (Chile)
L. Bronfman, Univ. de Chile (Chile)

Published in SPIE Proceedings Vol. 9914:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VIII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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