Tenerife Experiment


Tenerife Experiment
Teide Observatory 2018 010.jpg
The remains of the Tenerife Experiment in 2018
Part ofTeide Observatory Edit this on Wikidata
Location(s)Spain Edit this at Wikidata
Coordinates28°18′03″N 16°30′37″W / 28.30072°N 16.51033°W / 28.30072; -16.51033Coordinates: 28°18′03″N 16°30′37″W / 28.30072°N 16.51033°W / 28.30072; -16.51033 Edit this at Wikidata
OrganizationInstituto de Astrofísica de Canarias
Jodrell Bank Observatory Edit this on Wikidata
Wavelength10, 15, 33 GHz (3.00, 2.00, 0.91 cm)
First lightOctober 1984 Edit this on Wikidata
Decommissioned2000 Edit this on Wikidata
Telescope stylecosmic microwave background experiment
Dicke radiometer
radio telescope Edit this on Wikidata
Websitewww.iac.es/proyecto/cmb/pages/en/former-cmb-experiments/the-tenerife-experiment.php Edit this at Wikidata
Tenerife Experiment is located in Canary Islands
Tenerife Experiment
Location of Tenerife Experiment
Commons page Related media on Wikimedia Commons

The Tenerife Experiment was a Cosmic Microwave Background (CMB) experiment built by Jodrell Bank (then known as the Nuffield Radio Astronomy Laboratories) of the University of Manchester in collaboration with the Instituto de Astrofisica de Canarias (IAC). It was the first CMB experiment to be installed and run at the Observatorio del Teide in Tenerife,[1] starting operations in October 1984,[2] and running with various upgrades and additional experiments until 2000.[1]

It measured anisotropy of the CMB on angular sizes of 5 degrees, about the size of the upper half of the constellation of Orion (from the "belt" to the "shoulders"). To reduce receiver instability, it performed fast Dicke Switching between two horns separated by 8 degrees. To remove long term drifts and atmospheric variations, it used a further switch of 8 degrees using a flat mirror in front of the horns.


  1. ^ a b "Anisotropías del Fondo Cósmico de Microondas - rad". research.iac.es. Retrieved 3 October 2020.
  2. ^ "Anisotropías del Fondo Cósmico de Microondas - Old webpage (1996-2000)". research.iac.es. Retrieved 3 October 2020.