How Do You Calculate Eyepiece Magnification?
How Do You Calculate Eyepiece Magnification? It’s equal to the telescope’s focal length divided by the eyepiece’s focal length. As a rule of thumb, a telescope’s maximum useful magnification is 50 times its aperture in inches (or twice its aperture in millimeters). What is magnification eyepiece? 2 Eyepieces. An eyepiece is essentially a combination of