Translator Disclaimer
28 September 2004 Forecast for HEAT on Dome A, Antarctica: the High Elevation Antarctic Terahertz Telescope
Author Affiliations +
Abstract
We have proposed to develop a prototype 0.5-meter far-infrared telescope and heterodyne receiver/spectrometer system for fully-automated remote operation at the summit of Dome A, the highest point on the Antarctic plateau. The unparalleled stability, exceptional dryness, low wind and extreme cold make Dome A a ground-based site without equal for astronomy at infrared and submillimeter wavelengths. HEAT, the High Elevation Antarctic Terahertz Telescope, will operate in the atmospheric windows between 150 and 400 microns, in which the most crucial astrophysical spectral diagnostics of the formation of galaxies, stars, planets, and life are found. At these wavelengths, HEAT will have high aperture efficiency and excellent atmospheric transmission most of the year. The proposed superheterodyne receiver system will be comprised of 0.8, 1.4 and 1.9 THz channels which will observe the pivotal J=7-6 line of CO, the J=2-1 line of atomic carbon, and the far-infrared fine structure lines of N+ and C+, the brightest emission lines in the entire Milky Way Galaxy. When combined with the HEAT telescope, the receiver system represents a uniquely powerful instrument for reconstructing the history of star formation in our Galaxy, with application to the distant Universe. The receiver system itself serves as a valuable testbed for heterodyne Terahertz components, using leading-edge mixer, local oscillator, low-noise amplifier, cryogenic, and digital signal processing technologies that will play essential roles in future Terahertz observatories. The proposed study will pave the way for future astronomical investigations from Dome A.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christopher K. Walker, Craig A. Kulesa, Dathon R. Golish, Abigail S. Hedden, K. Jacobs, Juergen Stutzki, J. R. Gao, Jacob W. Kooi, Dave Glaister, Willy Gully, Imran Mehdi, Mark R. Swain, and Peter Siegel "Forecast for HEAT on Dome A, Antarctica: the High Elevation Antarctic Terahertz Telescope", Proc. SPIE 5489, Ground-based Telescopes, (28 September 2004); https://doi.org/10.1117/12.551424
PROCEEDINGS
11 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

The Greenland Telescope
Proceedings of SPIE (September 16 2012)
Highlights Of Infrared Astronomy
Proceedings of SPIE (November 09 1975)
Future prospects for THz spectroscopy
Proceedings of SPIE (July 18 2008)
SuperCam a 64 pixel heterodyne imaging array for the...
Proceedings of SPIE (July 05 2006)

Back to Top