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Telescopes Optics Aperture ratio
Is the ratio of the aperture to the focal length of a telescope.
The aperture ratio
The aperture ratio of a telescope is the relationship between the lens aperture and the focal length. A telescope with a 100 mm aperture and a focal length of 1000 mm has an aperture ratio of f/10. The focal length is 10 times greater than the aperture.
20.10.2020
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