One way to do that, they knew, was to make the focal length of the eyepiece shorter ... Standing on shoulders Both types of telescopes—Galileo's refractor and Newton's reflector—underwent ...

Most telescopes come with two or three eyepieces. Usually, 100 to 200-power magnification is the most you’ll ever need for ...

A total of three different eyepieces come with this scope ... to have a basic understanding of the two different types of ...