Aperture refers to the diameter of the primary optical element (e.g., lens or mirror) in a telescope, determining its light-gathering ability and resolving power. Magnification, on the other hand, is the degree to which a telescope enlarges the apparent size of viewed objects and details, calculated by dividing the focal length of the telescope by the focal length of the eyepiece. While aperture determines a telescope’s ability to collect light and resolve fine details, magnification affects the apparent size and clarity of observed objects, with higher magnifications often requiring larger apertures for optimal performance.
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