First data release (DR1) of terahertz data from the HEAT telescope at Ridge A

HEAT (the High Elevation Antarctic Terahertz telescope) is a 60cm aperture telescope designed to obtain wide-field spectroscopic maps of the Milky Way in frequency bands from 0.5 to 2 THz. The telescope is described here: http://soral.as.arizona.edu/HEAT/. HEAT is part of the PLATO-R experiment, described here: https://mcba1.phys.unsw.edu.au/~plato-r/. The data set shows the strength of various atomic and molecular emission lines across wide (tens of square degrees) fields-of-view in the Galactic Plane. The spectroscopic information (i.e., doppler shift of the line frequencies) allows an estimate to be made of the distance to the emission.The telescope was installed at Ridge A, at an altitude of approximately 4035 m.