Initial considerations of the 5 meter Dome A Terahertz Explorer (DATE5) for Antarctica

Terahertz radiation comes from cold objects in universe. It provides important information of star and galaxy formation. Within these bands, thousands of molecular lines are located, which may reveal important processes in cosmology. In Antarctica, the Dome A area has the best observing windows in the terahertz waveband. In this paper, a 5 meters Dome A Terahertz Explorer (DATE5) telescope concept is provided, which is a fully steerable telescope, working under the harsh Dome A polar environments. It requires a higher surface and pointing accuracies. This paper also discusses major aspects to be taken into consideration in its initial conceptual study.