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& Yerkes telescope The world**#x2019;s largest telescope made only from lenses (with no mirrors) is located at the Yerkes Observatory near Chicago Its objective lens is 1.0 m in diameter and has a focal length of +18.9 m. The eyepiece has a focal length of +7.5 cm. The objective lens and eyepiece are separated by 18.970 m. (a) What is the location of the final image of a Moon crater
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