14). Ignoring the atmosphere for this problem, what would the focal length of the eyepiece of your telescope have to be to make an image of Mars that is 0.75° big when Mars (r = 3400 km) is 5.7 X 10' km from Earth? The focal length of your objective mirror is 6.34 m. Since eyepiece glass size scales with focal length, as f gets smaller, so does the width of the glass in the eyepiece where you stick your eye. If the human pupil in your eye is about 7 mm in low light conditions, would making an eyepiece small enough to create an image of Mars this big make any sense? Explain.

14). Ignoring the atmosphere for this problem, what would the focal length of the eyepiece of your telescope have to be to make an image of Mars that is 0.75° big when Mars (r = 3400 km) is 5.7 X 10' km from Earth? The focal length of your objective mirror is 6.34 m. Since eyepiece glass size scales with focal length, as f gets smaller, so does the width of the glass in the eyepiece where you stick your eye. If the human pupil in your eye is about 7 mm in low light conditions, would making an eyepiece small enough to create an image of Mars this big make any sense? Explain.