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. It can capture more detailed and stable images than reflecting telescopes of the same size.Refracting telescopes requires less maintenance.Therefore, after initial alignment, there are fewer chances of misalignment of their optical system. Refracting telescopes are very rugged.Keplerian Refractors are also great for novice astronomers and are most commonly used. Though the Keplerian Refractor produces an inverted image, it is still preferred over Galilean Refractor as a larger apparent field of view is provided by the Keplerian Refractor. As a result, a horizontally and vertically inverted image is produced. Keplerian Refractor design produces an image using a bi-convex lens objective with an extended focal length and a bi-convex lens eyepiece placed behind the focal plane. Keplerian Refractor uses a convex lens in both objective and eyepiece. The main advantage of using the Galilean Refractor design is that we get an erect and true image in the left or right perception.īut if you pick up a relatively modern Refractor telescope, you will most possibly pick up a telescope constructed using the “Keplerian Refractor” design. An objective made out of a bi-convex lens and an eyepiece made out of a bi-concave lens are used to form a magnified image. The first refractor telescopes used the “Galilean Refractor” design. Refractor Telescopes first originated from Europe in the early 1600s. Refractor TelescopeĪs the name suggests, refractor telescopes rely on lenses and use the principle of refraction of light to enlarge an object and project the image on the eyepiece. Reflector telescopes are a little bit heavier in weight. A bigger Reflector telescope is feasible. A bigger Refractor telescope is not feasible. Image quality is relatively bad compared to reflector telescopes. There is no lens sag in the Reflector telescope. Lens sag is prominent in this type of telescope. No chromatic aberration is seen in the reflector telescope. Refractor Telescope Reflector Telescope Refractor Telescope suffers from chromatic aberration.
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