MMT Observatory, Optical telescope at Mount Hopkins, United States
The MMT Observatory contains a 6.5-meter diameter primary mirror located at 2,616 meters above sea level in the Santa Rita Mountains.
The Multiple Mirror Telescope operated from 1979 to 1998 with six individual mirrors before being replaced with a single primary mirror installation.
The University of Arizona and Smithsonian Institution jointly manage this facility, making astronomical research accessible to scientists across the United States.
The observatory building features retractable walls and roof sections that enable rapid temperature equilibration between the telescope and night air.
The primary mirror incorporates a specialized honeycomb structure developed by the Steward Observatory Mirror Laboratory, reducing its overall mass.
Location: Arizona
Inception: 1979
Official opening: 1979
Elevation above the sea: 2,616 m
Diameter: 6.5 m
Part of: Fred Lawrence Whipple Observatory, Steward Observatory
Website: https://mmto.org
GPS coordinates: 31.68830,-110.88500
Latest update: May 14, 2025 18:37
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