The Large Binocular Telescope (LBT), on Mount Graham near Tucson, Arizona, has two 8.4-m-diameter primary mirrors. The

Question:

The Large Binocular Telescope (LBT), on Mount Graham near Tucson, Arizona, has two 8.4-m-diameter primary mirrors. The mirrors are centered a distance of 14.4 m apart, thus producing a mirror with an effective diameter of 14.4 m. What is the minimum angular resolution of the LBT for green light (A = 550 nm)?