Giant mirror transplanted in trend-setting telescope

UA News May 2000 | A radical instrument that transformed design and construction of large telescopes is now twice as large. The original 4.5-meter-diameter Multiple Mirror Telescope was the third-largest optical telescope in the world when dedicated on Mt. Hopkins, Arizona, in 1979. Now, converted to the 6.5-meter telescope of the MMT Observatory, it was the largest single-mirror telescope in North America when it was rededicated May 20.  more