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<p>The MMT heralded a change in telescope design; all major optical telescopes since the MMT have been built with altitude-azimuth mounts. Several technologies pioneered at the MMT contributed to the success of the subsequent generation of large telescopes. These included: high dynamic-range servos for the <a href="page.php?w=Altazimuth_mount">altitude-azimuth</a> mount; highly accurate pointing that eliminated the need for sky charts; co-alignment and co-phasing of multiple telescopes; improvements to optical performance by attention to thethermal</p><p>
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