COSMOlogical Structures On Medium Angular Scales

COSMOS is a radio telescope at Teide Observatory designed to observe the cosmic microwave background radiation filling space. The instrument uses a rotating flat mirror and a specialized antenna to capture extremely faint radio signals from across the sky.

The observatory operated this instrument from 1998 to 2007 as one of its key tools for space research. During that period it collected scientific data that contributed to understanding the universe's earliest history.

The telescope contributed to international scientific understanding by mapping spatial variations in temperature of the 2.7K cosmic microwave background radiation.

The instrument was located at one of the world's leading high-altitude observatories above 2,000 meters with excellent sky visibility. This remote location provided minimal atmospheric interference and enabled highly precise observations of cosmic signals.

The system used a cryogenically frozen receiver unit to amplify the faintest signals reaching Earth from the coldest regions of the universe. This cooling technology was essential to detect the tiniest temperature variations in the cosmic radiation.

Diameter: 1.8 m

Part of: Teide Observatory

Website: http://iac.es/proyecto/cmb/pages/en/former-cmb-experiments/cosmosomas.php

GPS coordinates: 28.30089,-16.51011

Latest update: December 14, 2025 14:22