Describe the Doppler Effect and give at least two ways that it can affect the spectrum of a star. Chapter 5 1. The main function of a telescope is to magnify a stars image. None of the above. Refraction is the bending of light when it passes from one medium to another.
Mirrors experience chromatic aberration.
Reflection is the bouncing of light off a surface. Spherical mirrors experience spherical aberration. The two basic types of optical telescopes are Galilean telescopes and Newtonian telescopes. Cassegrain telescopes and Copernican telescopes. None of the above, there is only one type of telescope.