The telescope itself is a classic parabolic antenna that enables the exploration of extensive cosmic objects such as near galaxies and interstellar clouds. Thanks to its large collecting surface, the 30 m telescope is unrivalled in sensitivity and has been very well adapted to detect weak astronomical sources. The panels of its parabola are calibrated with a precision of 55 micrometres in relation to an ideal paraboloid. The radio telescope is equipped with a series of receptors that operate at wavelengths of around 3, 2, 1, and 0.8 mm, simultaneously recording up to 160,000 channels of a high-resolution frequency, for the mapping of molecular gas in extensive nebulas. The telescope is also equipped with two cameras that operate at wavelengths of 2 and 1mm, devoted to the observation of the emission of dust in near molecular clouds and in galaxies, including the farthest (and youngest) galaxies in the known universe.