What is the magnification of a Newtonian telescope with a primary mirror of diameter 0.25 m and focal length of 4 m when used with an eyepiece of focal length 25 mm and an optical diameter of 2.5 mm?

Question

Quizplus · Accepted Answer

The magnification of a Newtonian telescope is given by the ratio of the focal length of the primary mirror (f1) to the focal length of the eyepiece (f2).

Magnification = f1/f2

In this case, f1 = 4 m and f2 = 25 mm = 0.025 m

Magnification = 4/0.025 = 160

Therefore, the magnification of the telescope is 160.

What Is the Magnification of a Newtonian Telescope with a Primary