Confused with scope focal length - what am I missing? - Beginners Forum (No Astrophotography) - Cloudy Nights
What determines a telescope's fstop? I often see the same size lens with different fstops. - Quora
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A Galilean telescope measures 9 cm from the objective to the eye-piece. The focal length of the objective is 15 cm. Its magnifying power is A. $2.5$ B. $\\dfrac{2}{5}$ C. $\\dfrac{5}{3}$ D. $\\dfrac{3}{5}$
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Angular magnification of telescope if focal length of objective and eye lenses are - YouTube
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a galilien telescope consists of an objective of focal length 12 cm ,eyepiece of focal length 4 cm .what should be the separation of two lenses when the virtual image of a
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