The microscope and telescope are two of the most potent symbols of science. The most important factors in a telescope are the aperture, (or light gathering capability), and the quality and accuracy of their optics. The major design criteria for a new telescope are portability and low cost. What type of telescope are you interested in? Among the many kinds of telescope, the reflecting and refracting telescope are two of the most popular. And, aperture and quality in a telescop...
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