Antireflection Coatings It’s true that when observing the night sky with your binoculars, you will want the biggest possible amount of light to reach your eyes and not reflect back into space from the objectives. Because of this, modern lenses are designed with anti-reflection optical coatings on at least one of the air-to-glass surfaces. The…
After buying your binoculars at a store, you should check their performance, or if you buy it online, as soon as they arrive, you should also check their performance as well. Below are few tests that will help you choose quality binoculars. Observe the objective lens carefully. if there are signs of scratches or dirt,…
There are brass housing covers on every binoculars model, and they are relatively heavy and expensive to produce. During the world war 1 subsequent hard rubber or leather covers were replaced in Germany by a cover of black lacquered cardboard. The heavier brass housing covers was replaced by the galvanized steel. In the 1930s, to…
The Background Binoculars are optical tools that consist of two barrel chambers with a pair of prisms inside, having an objective lens and an eyepiece. The prisms are for the reflection and lengthening of the light, while the objective lenses, are for magnifying and enhancing images due to stereoscopic vision. History Just like every other…
Exit Pupil Exit pupil is the result of dividing the objective lens diameter by the magnification. Dividing thus will give you a number approximately between 4 and 8. The number which is measured in diameter, represents the beam of light that leaves the eyepiece when you hold a binocular with the objective pointed towards a…
Those who are new usually often rush to buy the first telescope they see in a departmental store, this is rightly understandable. All nice pictures of celestial bodies seen in magazines or in books have this effect on majority of the people. Unfortunately, the experience usually turns out to be different from what was assumed…
There are two available types of binoculars, according to how they focus: The CF (Central Focusing) and IF (Individual Focusing) binoculars. As soon as you know how to properly use binoculars, you can experience the full viewing excitement. Getting the knowledge on a few simple procedures will ensure your enjoyment. Nomenclature of Central Focusing Binoculars…
Knowing how to use binoculars can be an exciting experience indeed. Having an understanding of a few simple procedures will ensure enjoyment. Binoculars are available in two types, according to their focusing: The central Focusing CF and the Individual Focusing IF. Here we will be looking at the Individual Focusing Binoculars and how to use…
There are two types of focusing mechanisms for binoculars. Most people go for the center-focus model, which uses a centrally mounted wheel you adjust both eyepieces the same time. The right eyepiece also has a separate adjustment, which helps to correct for any difference in near or farsightedness between your eyes. If you want to…