How does the Objective Lens Refractor Telescope compare to other products like it?
Comparing Telescopes A telescope has often been called a “light bucket,” as its purpose is to collect as much light as possible. This is done by increasing the aperture, but as the aperture increases in size, so must the length of the tube. In the late 1600’s, two of the early astronomers, Huygens and Hevelius, in their quest to see more of our Universe, built telescopes up to 200 feet long. A major problem with such large telescopes was the fact that the edges of a lens are much thinner than the center. As it become larger, it becomes heavier and increasingly difficult to mount. The world’s largest refractor telescope was built in 1897 at Yerkes Observatory in Wisconsin. It has a lens diameter of forty inches and is still in use today. It is at the upper limit of size at which a refract telescope can be structurally stable. If its lens were any heavier, it could not be supported around its edges by current technology. A reflector telescope does not suffer from this limitation because
