Astro Fov Calculator 2021

Focal Length of Telescope/Binoculars (mm): Focal Length of Eyepiece (mm): Eyepiece Diameter (mm) (optional):

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The field of view (FOV) is the angular diameter of the sky that can be observed with a telescope or binoculars. It is usually expressed in degrees or minutes of arc. The FOV depends on the instrument's aperture, focal length, and eyepiece specifications. Focal Length of Telescope/Binoculars (mm): Focal Length of