How do images differ in a telescope as the focal length differs?
Posted October 22nd, 2009 by admin 2 Comments »
Nick G asked:
Suppose that you have 2 telescopes with the same aperture, Telescope A has a focal length 3 times longer than that of telelscope B. How would the image size differ in telescope A from that in telescope B?
Suppose that you have 2 telescopes with the same aperture, Telescope A has a focal length 3 times longer than that of telelscope B. How would the image size differ in telescope A from that in telescope B?