The twin 10-meter telescopes at W. M. Keck Observatory in Hawaii and the 8.2-meter Subaru Telescope sited next to them support an array of specialized instruments on Nasmyth platforms, with a similar design being used for the future Thirty Meter Telescope. The 2.4-meter Automated Planet Finder telescope at Lick Observatory in California supports the use of two Nasmyth foci.
The W. M. Keck Observatory in Hawaii and the Subaru Telescope are twin observatories that share a common platform design, featuring specialized instruments on Nasmyth platforms. This same design will be used for the Thirty Meter Telescope. The Lick Observatory's Automated Planet Finder telescope also utilizes two Nasmyth foci.