Submillimeter Array

The Submillimeter Array is a collection of eight 6-meter antennas positioned at approximately 4000 meters elevation that work together as a single telescope system. These antennas can be spread across significant distances to capture fine details of distant cosmic objects.

This facility was built between 1998 and 2003 and opened new possibilities for observing submillimeter wavelengths from Mauna Kea's summit. It represented an advance in the ability to study cold structures in space.

This facility is part of the Mauna Kea Observatories complex and plays a role in global astronomical research efforts. It represents a shared scientific resource for studying the cosmos from one of Earth's premier observation sites.

The antennas can be repositioned based on observation needs to study different types of cosmic objects. Visiting this location requires good preparation due to the high altitude and environmental conditions at this elevation.

The system can detect cold gases and dust clouds in space that remain invisible to other instruments. This capability provides insight into regions where new stars and planets are being born.

Location: Hawaii County

Elevation above the sea: 4,080 m

Diameter: 6 m

Part of: Mauna Kea Observatories, Event Horizon Telescope

Website: https://cfa.harvard.edu/sma

GPS coordinates: 19.82430,-155.47800

Latest update: December 10, 2025 16:03