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Good telescopes don't use glass lenses for magnification, because they refract different colors is slightly different angles (known as prism effect), but they use spherical mirrorsinstead. Telescopes with lenses have the advantage of being smaller, cheaper and lighter.
Therefore refracting telescopes use lenses, and reflecting telescopes use mirrors.
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∙ 12y ago
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What is the biggest problem with building a giant refractor?
Grinding a lens to the required precision aw well as the mass of the lens distorting its shape.
What telescope has an eyepiece lens and a mirror?
The telescope described is an optical telescope. If the primary optic is a mirror, it's a reflector, and it the primary optic is a lens, it's a refractor.
What is the first lens in a refractor called?
The first lens that the light energy passes through on its way through the telescope is called the object lens or the objective. It is the most important and the most expensive part of the telescope. Telescopes are graded by the diameter of the object lens.
What are the advantages and disadvantages of a ground based radio telescope?
disadvantages:Refractor telescopes suffer from chromatic aberration, a color distortion that produces a rainbow of colors around an image. Chromatic Aberration can ruin an images appearance. The glass lens is easily broken. Often, the glass lens in a refractor telescope is not perfect and as a result of this imperfection, large refractor telescopes (over 40 inches) do not work properly.
What telescope uses an eyepiece and an objective lens?
Practically all telescopes which use lenses, normally the refracting type. the Reflector use objective Concave Mirrors, but even these need eyepieces or finder scopes.
What is the second lens in a traditional refractor called?
Refracting telescopes use a main lens made from glass and called the objective lens.
What is the second lens ina traditional refractor called?
Refracting telescopes use a main lens made from glass and called the objective lens.
What was one major problem with the refractor telescope used bu Galileo?
One major problem with the refractor telescope used by Galileo was sagging lens.
What is the biggest problem with building a giant refractor?
Grinding a lens to the required precision aw well as the mass of the lens distorting its shape.
What telescope has an eyepiece lens and a mirror?
The telescope described is an optical telescope. If the primary optic is a mirror, it's a reflector, and it the primary optic is a lens, it's a refractor.
What is the first lens in a refractor called?
The first lens that the light energy passes through on its way through the telescope is called the object lens or the objective. It is the most important and the most expensive part of the telescope. Telescopes are graded by the diameter of the object lens.
What is in common between Hubble and Galileo?
refractor |riˈfraktər| noun a lens or other object that causes refraction. • a refracting telescope.
What type of lens used in telescope?
Most telescopes use refractor lenses. Sometime a telescope will use reflector lenses.
What are the advantages and disadvantages of a ground based radio telescope?
disadvantages:Refractor telescopes suffer from chromatic aberration, a color distortion that produces a rainbow of colors around an image. Chromatic Aberration can ruin an images appearance. The glass lens is easily broken. Often, the glass lens in a refractor telescope is not perfect and as a result of this imperfection, large refractor telescopes (over 40 inches) do not work properly.
What is refractors?
A refractor is a telescope whose principal focusing element is a lens and collects lots of light from a distant object and brings that light, or image, to a point or focus.
What telescope uses an eyepiece and an objective lens?
Practically all telescopes which use lenses, normally the refracting type. the Reflector use objective Concave Mirrors, but even these need eyepieces or finder scopes.
Was Galileo's telescope a reflector.?
No: Galileo's telescope was a Galilean refractor, which is to say it has a single large object lens at the top end and a concave eye lens at the other end. This is not a popular type of telescope now because it has a small field of view, and it is only used for cheap telescopes and opera glasses.
