And as mirrors can be supported from behind, they do not suffer from the sag problem as refractor telescopes. Reflector telescopes dodge the chromatic aberration problem by using a convex mirror as the objective. And the picture quality is better on the reflector telescope thanks to its larger objective size. But Reflector telescopes do not suffer from any of these problems. We learned that refractor telescopes suffer from chromatic aberration and lens sag problems. Relatively hard to use as optics may require frequent alignment Refractor Telescope Or Reflective Telescope Which One Is Better?.As reflector telescopes can easily be upscaled in size, the mirrors inside the telescope must be cleaned because of their open construction.Though reflector telescopes are good at what they do, there are a few cons. As a result, dimmer objects can be observed with more details and sharpness. Because of having a larger objective, more light can be captured by a reflector telescope.Lens sag problem is non-existential in Reflector telescope.Produced image is free from Chromatic Aberration.As a result, we can observe objects looking at the back of the telescope. That small convex mirror reflects light towards the opening in the center of the objective mirror, which contains the convex lens eyepiece. The Cassegrain Reflector method uses a small convex non-angled mirror. That is why a distinct method known as “Cassegrain Reflector” is used to project light in the direction of the eyepiece. Some people may find looking sideways at objects difficult. The small mirror upon which light is reflected the eyepiece tends to lessen the essential surface area of the objective slightly. The light is then reflected by the mirror and projected towards the opening on the side of the telescope housing, which contains a convex lens eyepiece. A small mirror inclined at a 45-degree gradient is placed inside the tube. The opposite end of the tube is left open to allow light to pass through the housing. Newton’s design continues to be used widely in constructing modern reflector telescopes.Ī concave mirror is positioned at the beginning of a large tube-shaped housing. The reflection law of glass is used in constructing the Reflector Telescope. The reflector Telescope was mainly developed by Issac Newton in 1668. There are some drawbacks of using refracting telescopes, which are stated below.
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