Galileo's original telescope (Figure 27-29) used a convex objective and a concave eyepiece. Use a ray diagram

Question:

Galileo's original telescope (Figure 27-29) used a convex objective and a concave eyepiece. Use a ray diagram to show that this telescope produces an upright image when a distant object is being viewed. Assume that the eyepiece is to the right of the object and that the right-hand focal point of the eyepiece is just to the left of the objective's right-hand focal point. In addition, assume that the focal length of the eyepiece has a magnitude that is about one-quarter the focal length of the objective.
In figure 27-29