Original: The observatory currently consists of three large telescopes: the 200 inch (5.08 m) Hale telescope, the 48 inch (1.22 m) Samuel Oschin telescope, and a 60 inch (1.52 m) reflecting telescope.
Simplified: The observatory is made up of four main telescopes: the 200 inch (5.08 m) Hale telescope, the 48 inch (1.22 m) Samuel Oschin telescope, the 18 inch (457 millimeter) Schmidt telescope, and a 60 inch (1.52 m) reflecting telescope.