Newtonian Telescopes, invented by Sir Isaac Newton, are often less expensive than other Astronomy Optics Designs that have the same size aperture. They provide wide field views due to their short focal length and are very efficient with light gathering because of their fast focal ratios. Newtonians, as they are commonly called, are generally much more portable than the larger Dobsonian Telescopes, which have the same optics design. They also make for fantastic imaging Telescopes because their fast focal ratios and because they are free of chromatic aberrations. Not only are these Telescopes used for Astrophotography, they are also great for visual astronomers as well. Take a look below to see the pros and cons of the Newtonian Telescope design.