How to calculate magnification (power) of a telescope or spotting scope? Identify the focal length of the scope. This is often marked on the body of the scope or it should be given in the user manual. For...
What do the numbers mean in the binoculars title? In a binocular name, the first number indicates the magnification power and the second number is the diameter of the objective lens in mm. For example, for a...
Introduction This electronic digital eyepiece has a standard fitting interface with eyepiece adapter (i.e., Diameter=1.25" or 31.75mm, fitting height=17mm) that can be fitted to a spotting scope or telescope...