Monthly Archives: August 2012

Anti Reflective Coating

Anti Reflective Coating Anti Reflective Coating – A chemical coating on the surfaces of the binocular lens elements and prisms will produce images that are sharper, less hazy, and higher contrast by reducing the amount of light that is randomly scattered … Continue reading

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Telescope Terms

Telescope Telescope – Before you can determine what type of telescope you really need, you should understand the following telescope terms. Aperture:  The most important aspect of any telescope is its aperture, the diameter of its main optical component, which … Continue reading

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Night Vision Generation

Generation Generation – Night vision spotting scopes have been around for many years and are categorized by the term “generation.”  Each substantial advancement in night vision technology establishes a new night vision scope generation.  Here are some terms that you … Continue reading

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Spotting Scope Terms

Spotting Scope Spotting Scope – Before you can determine what type of spotting scope you really need, you should understand the following spotting scope terms. Eyepieces:  The spotting scope eyepieces differ in many ways.  Some are fixed in focal length … Continue reading

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Binocular Terms

Binocular Binocular – Before you can determine what type of binocular you really need, you should understand the following binocular terms. Exit Pupil:  The exit pupil is the small circle of light that appears in the eyepiece.  The formula for … Continue reading

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Binocular Prism Systems

Binocular Prism System Binocular Prism System – The function of a binocular prism system is to reduce the size needed to provide focal length and turn the resulting upside-down image right-side-up.  Most optical prisms are made from borosilicate (BK-7) glass … Continue reading

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Gun Scopes Terms

Gun Scopes Gun Scopes – Before you can determine what type of gun scopes you really need, you should understand the following terms for gun scopes. Exit Pupil:  The exit pupil on gun scopes is the small circle of light … Continue reading

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