Reflector or Refractor?
We separate light telescopes into two general classes. “Reflecting telescopes” achieve most of their magnification with curved mirrors, while “Refracting telescopes” magnify by bending light passing through curved glass lenses. The different colors of light passing through the glass do not always focus on the same point. This makes “refractors” subject to “chromatic aberration” (color error) which is practically absent in “reflectors.
