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A refracting telescope uses a lens (or for most refractors today, 2 or more lenses) to bend the wavelengths of visible light to a focal point as a means of collecting light. The light is then focused using an eyepiece. Depending on the focal length of the eyepiece, the effective magnification of a telescope can be altered.

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11y ago
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12y ago

To keep it simple: The width of the objective lens. Consider the pupil in your eye. When it is open to it's maximum (in the dark) it is still a small disc. And you can gather a large amount of light with that alone. Now compare your pupil to a telescope lens xxx wide. It can gather thousands of times more light than the pupil of your eye.

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11y ago

They are focused by the light rays reflecting into the lens showing the thing.

This is not a true statement

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12y ago
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15y ago

optical telescopes.

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11y ago

Parabolic Mirror

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10y ago

A concave mirror.

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Q: Which structure is used to focus light in a reflecting telescope?
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How is a radio telescope similar to a refracting telescope and a reflecting telescope?

They all collect and focus light and other forms of electromagnetic radation.


Differences between reflecting and refracting telescopes?

Reflecting Telescopes -uses a single or combination of curved mirrors to bring light to a focus and make an image.


Does a reflecting telescope gather light with a lens or a mirror?

reflecting telescope gathers light from mirror


How many mirrors does a reflecting telescope have?

A reflecting telescope only needs one mirror, the primary mirror which will focus incoming light to a single point. A digital telescope might place the digital recording media directly in front of the reflecting telescope without any additional mirrors (although perhaps some lenses). For practical purposes though, most optical telescope will have a secondary mirror that will either focus light straight back through a hole in the primary telescope mirror, or to the side of the telescope. Some telescopes, especially the large ones in observatories will have several mirrors directing the light path to the observer or recording equipment.


What is the difference between refracting telescopes and reflecting telescopes?

Hi , A reflective scope uses mirrors to focus the image and the light while a refractive scope uses curved glass lenses to focus the light and the image. Generally the reflector telescope is better for deep sky viewing and the refractor is better for lunar and planetary viewing. You can also find a compound telescope which uses both glass and mirrors which is better for general viewing. This site very good for info and purchase http://www.tejraj.com/index.html Contact Me: http://notesonline.co.in/mail.asp

Related questions

Telescope that uses several mirriors to combine and focus light?

A reflecting telescope forms an image by using a combination of curved mirrors to focus light. It was invented as an alternative to the refracting telescope.


When light strikes the large concave mirror of a reflecting telescope where is the light focus?

In front of the mirror


How is a radio telescope similar to a refracting telescope and a reflecting telescope?

They all collect and focus light and other forms of electromagnetic radation.


What of type telescope uses concave mirrors to focus light and form an image at the focal point?

A reflecting telescope.


Differences between reflecting and refracting telescopes?

Reflecting Telescopes -uses a single or combination of curved mirrors to bring light to a focus and make an image.


Does a reflecting telescope gather light with a lens or a mirror?

reflecting telescope gathers light from mirror


What type of telescope uses lenses or mirrors to gather focus light energy?

the reflecting telescope uses mirrors and lenses. The refracting telescope does not include the mirrors.


What is the difference between a reflecting telescope and a refracting telescope?

A reflecting telescope uses mirrors while refracting telescopes uses lens. The refracting telescope also had chromatic aberration and bad resolution while the reflecting telescope had none of these.


Reflecting and refracting telescope what's the difference?

Refracting telescope: Brings light to a focus by passing it completely through a transparent glass lens.The lens must be perfect throughout, and unobstructed.Reflecting telescope: Brings light to a focus by reflecting it from the surface of a curved mirror.The surface shape must be perfect, but the mirror may be made of anything, and can be supportedby anything.


How many mirrors does a reflecting telescope have?

A reflecting telescope only needs one mirror, the primary mirror which will focus incoming light to a single point. A digital telescope might place the digital recording media directly in front of the reflecting telescope without any additional mirrors (although perhaps some lenses). For practical purposes though, most optical telescope will have a secondary mirror that will either focus light straight back through a hole in the primary telescope mirror, or to the side of the telescope. Some telescopes, especially the large ones in observatories will have several mirrors directing the light path to the observer or recording equipment.


Which type of telescope uses a mirror to gather light?

A reflecting telescope.


Does the reflecting telescope deal with sound or light?

light obviously