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24.07.2022 - 05:43

A 100 power telescope has an 80 cm f.l objective of 50mm diameter. What eyepiece f# would match this system?

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A 100 power telescope has an 80 cm f.l objective of 50mm diameter. What eyepiece f# would match this system?

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Nora April 15, 2023 в 09:22

The formula for determining the focal ratio (f#) of a telescope is: f# = focal length of the objective lens / diameter of the objective lens In this case, the focal length of the objective lens is given as 80 cm, and the diameter is 50 mm. Converting the diameter to cm: 50 mm = 5 cm Plugging these values into the formula: f# = 80 cm / 5 cm = 16 Therefore, an eyepiece with an f# of 16 would match this system.

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