Large Binocular Telescope
The LBT is composed of two 8.4 meter parabolic primary mirrors with a 14.4 meter center-to-center separation. These mirrors are F/1.142 and weigh 16 metric tons each. The F/15 secondary mirrors are adaptive allowing for atmospheric corrections. The two elevation C-ring supports weigh 56 metric tons each. The building is housed on an azimuth ring that rotates the entire upper building and the telescope.