The Anatomy of a Rifle ScopeBy
ANATOMY OF A RIFLE SCOPE
How do you shop for a rifle scope that fits your game? It depends on three things: the type of shooting you do, the type of gun you use, and your personal preferences for features like reticle type and color.
To determine which rifle scope is best for you is to educate yourself on the “basics” – the anatomy, the power, where and what it’s best used for. Once you get a handle on the basics, you can make a more informed decision on which is best for your application.
Rifle scopes work by magnifying an image and placing your eye on the same optic plane as your target. Magnification works by bending light rays with a number of lenses within the scope. The higher the magnification,the longer the scope. Lower magnification scopes are smaller and contain less lenses.
There are components that all rifle scopes include: a reticular or crosshair, a dot, a post or some marking to help align the gun with the target. A “reticle” is another term for the “crosshair”, a " +" shape, that shows on the target to aid in alignment. The “crosshair” may also be a “dot” or a “post” (line) the assists in centering.
Riflescopes work to eliminate the aggravation of “open sights” and allow for more precise shooting.
A rifle scope is composed of two tubes, one inside the other. The inner tube refracts the light allowing the amount of magnification and the outer tube is for protection and for mounting.
Rifle scopes usually contain the following components;
• 1 ) Eye Piece: Attaches to the eye-bell and holds the ocular lens.
• 2 ) Ocular Lens: The lens nearest to your eye.
• 3 ) Eye Bell: Houses the eye piece and attaches to the tube.
• 4 ) Eye Relief: Refers to the distance between your eye and the ocular lens when you see the full field of view.
• 5 ) Power Ring: Allows you to rotate and change the magnification on the scope.
• 6 ) Windage Adjustment: Changes the aiming point of the scope left to right (horizontal plane)
• 7 ) Elevation Adjustment: Shifts your aiming point higher or lower (vertical plane)
• 8 ) Outer Tube: Provides a mount for the eye piece, eye-bell and objective bell.
• 9 ) Objective Bell: Encases the objective lens and the tube gets attached to it.
• 10 ) Objective lens: Collect the light that enters the scope. The higher the magnification the larger the diameter of the objective lens.
• 11 ) Adjustable Objective Lens (AO): Fixes the parallax error by adjusting the objective lens. A parallax error is caused in a medium to high powered microscope, when the scope's "eye" is not focused at the right distance.
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