Discovery Channel Telescope

The Discovery Channel Telescope is a large research facility located in a forested mountain area of Arizona at approximately 2,360 meters elevation. The primary mirror measures 4.3 meters in diameter and is only 10 centimeters thick, while a special instrument holds five different tools to switch quickly between observation modes.

The facility was completed in 2012 and resulted from a partnership between Discovery Communications and Lowell Observatory. This project marked a new chapter in scientific collaboration and observation technology in Arizona.

The facility draws researchers from well-known universities who study comets, exoplanets, and star formation at this site. This collaborative work shapes daily activities on the mountain, where scientific inquiry remains central to what happens here.

The mountain location means cold nights and clear skies, creating ideal conditions for observations. Visitors should know that the elevation and remote location require adjustment time and warm clothing is necessary.

The mirror construction uses 156 separate elements that move actively and adjust shape during observation. This complex engineering allows the telescope to capture images of remarkable clarity, even though the thin construction would normally cause distortion.

Location: Arizona

Elevation above the sea: 2,360 m

Diameter: 4.3 m

Part of: Lowell Observatory

Website: https://lowell.edu/research/research-facilities/4-3-meter-dct

GPS coordinates: 34.74440,-111.42200

Latest update: December 10, 2025 15:50