There are many binoculars available, but the most popular ones used by amateurs are the Galilean and prism binoculars. While buying it, make sure that you consider its magnification number. But this image, though magnified, has a serious flaw. A binocular is a lot like a telescope; in fact, its construction is like two identical telescopes, which are placed next to each other. The prisms used are nothing but cubes of glasses that act like mirrors, having no silver coating on their back. A pair of binoculars is often used for watching stars and planets, and for identifying constellations in the sky. The objective lens collect the light from the object that the user is looking at, and bring this collected light into focus in the eyepiece lens, which then creates a visible image that is magnified to a specified degree. As mentioned before, most binoculars have a fixed magnification. These include a narrow field of vision, low brightness and contrast, and a bulky frame. So, in a binocular,

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