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marked with the magnification?

April 26, 2017magnification marked

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marked with the magnification?

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Telescope eyepieces are marked with their focal length in millimeters, not the magnification. To calculate the magnification you will get with any telescope eyepiece, divide the focal length of the telescope eyepiece into the focal length of the telescope. A telescope eyepiece with a focal length of 25 mm when used in a telescope with 1000 mm focal length therefore produces a magnification of 40x.

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– Telescope eyepieces are marked with their focal length in millimeters, not the magnification. To calculate the magnification you will get with any telescope eyepiece, divide the focal length of the telescope eyepiece into the focal length of the telescope. A telescope eyepiece with a focal length of 25 mm when used in a telescope with 1000 mm focal length therefore produces a magnification of 40x.