Nordic Optical Telescope

The Nordic Optical Telescope is a Ritchey-Chrétien telescope at Roque de los Muchachos Observatory on La Palma with a primary mirror diameter of 2.56 meters. The facility sits at roughly 2,400 meters elevation and includes multiple spectrographs and specialized cameras designed for different types of observations.

The telescope began astronomical observations in 1988 and received its official inauguration in September 1989 on the Canary Island. This founding was part of the observatory's growth into a major international research center.

Scientists from Nordic countries work together using this telescope for their astronomical research and discoveries. This reflects a long tradition of research collaboration across Northern Europe.

Access is reserved for astronomers who must submit detailed research proposals. Visitors should check in advance with the observatory administration about whether guided tours or public visits are possible.

The telescope uses a hyperbolic configuration of its mirrors to produce sharp images with minimal optical error across the entire viewing field. This special mirror shape makes it possible to achieve precise astronomical observations that are difficult with conventional telescopes.

Location: Canary Islands

Official opening: September 1989

Elevation above the sea: 2,382 m

Diameter: 2.56 m

Part of: Roque de los Muchachos Observatory

Website: http://not.iac.es

GPS coordinates: 28.75728,-17.88508

Latest update: December 10, 2025 20:03