Telescope magnification
Simple Formulas for the Telescope Owner - Sky & Telescope - Sky & Telescope
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Tele Vue Optics: Imaging Methods
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Telescope Equations: Magnification
Telescope common aperture size comparison chart - Beginners Forum (No astrophotography) - Cloudy Nights
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Cassegrain Formulas and Tips by Mike Lockwood
How to Choose Your Telescope Magnification - Sky & Telescope - Sky & Telescope
Schmidt-Cassegrains — Starizona
astronomical optics, part 3: the astronomical image
Two-mirror telescopes: Cassegrain, Gregorian and variants
Refractive Telescopes
How to Calculate Telescope Magnification
Refracting Telescopes
Refractive Telescopes
Telescope Equations: Minimum Magnification
Formulas - Telescope Magnification
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Telescope Equations: Magnification
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Light Vortex Astronomy - Article: How to Very Accurately Calculate your Telescope's Effective Focal Length
Simple Formulas for the Telescope Owner - Sky & Telescope - Sky & Telescope
