User manual BUSHNELL TELESCOPE TERMINOLOGY
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Manual abstract: user guide BUSHNELL TELESCOPE TERMINOLOGY
Detailed instructions for use are in the User's Guide.
[. . . ] TELESCOPE TERMINOLOGY
Achromatic This is an almost nonexistent color that is placed on a lens to give the image a sharper, crisper look. [. . . ] This is expressed in millimeters: determined by dividing the size of the objective lens by the power. Eye Relief Distance behind the binocular eyepiece at which the entire field of view is visible. Field Of View Widest Dimension of the Diameter of the field being viewed, expressed in number of feet at 1000 yards. Focal Length - The distance between the Objective Lens and the eyepiece measured in millimeters. Objective Lens - The Objective lens is the lens closest to the object being viewed. Your Bushnell telescope features a technologically superior achromatic objective lens that provides bright, clear, and sharp images. [. . . ] Zenith The point on the celestial sphere that is directly over the top. [. . . ]
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