Q. Which eyepieces have high magnification?
A. Keep in mind that the smaller the number on the eyepiece, the higher the magnification. Higher magnifications do however always cause the image to loose sharpness. The lower powers will always be sharper due to the effects of Earth’s atmosphere. Barlow lenses are rated by their magnification factors, commonly 2X or 3X. For instance, a 2X Barlow used on the ETX80 Observer with 400mm focal length and a 26mm eyepiece would calculate to a total magnification of 30X (400/26 multiplied by 2).