The Large Binocular Telescope (LBT) is a joint project between several us-american, italian and german science institutions. The LBT is a binocular telescope consisting of two 8.4-meter mirrors on a common mount. This telescope will be equivalent in light-gathering power to a single 11.8 meter instrument. Because of its binocular arrangement, the telescope will have a resolving power (ultimate image sharpness) corresponding to a 22.8-meter telescope. It is located at Mt. Graham in Southern Arizona.