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They are refracting telescopes(:
Large refracting telescopes are no longer built because there were too many problems with them. There was color distortion, light pollution, and when the object hits the focal point it turns upside down. Then you don't see the object for what it really is, you see it upside down and weird-ed out. They are to complicated and scientists believed they should just stick with the simple, small, original refracting telescopes!!!!
-Meghan Betts (8th grader)
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∙ 10y ago
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∙ 14y agoIt is cheaper and easier to create mirrors rather than lenses. Large lenses become difficult to support the larger they become. Additionally, mirrored telescopes fold light waves so that a telescope can be shorter, the same size telescopes with lenses are greater in length.
Wiki User
∙ 14y agoThat is because reflecting telescopes will have a greater magnification in a smaller space. Refracting telescopes that magnify to the same degree as reflecting telescopes would be much larger than the reflecting telescopes.
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∙ 13y agolarge ones collect more light, which means they can see fainter objects further away.
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∙ 12y agomost large optical telescopes are reflectors; light does not pass through a mirror so the glass for reflecting telescope does not have to be of optical quality.
Wiki User
∙ 12y agoApproximately none of them are.
Wiki User
∙ 15y agomost were built before the1900's... :)
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How are reflecting and refracting telescopes different?
reflecting telescopes have concave lenses and refraccting telescopes have convex lenses.
What are reflecting and refracting telescopes designed for?
Light is found by reflecting telescopes and refracting telescopes are used to dected sound
Is refracting telescopes bigger then reflecting telescopes?
No
Why are most modern telescopes reflecting telescopes?
A reflecting telescope is much easier to build than a refracting telescope and consequently is much less expensive. A reflecting telescope uses a concave mirror to collect and concentrate starlight and send it to your eye, whereas a refracting telescope uses a series of lenses to do the same thing. Optical quality lenses are much more expensive (and heavier) than a well-made mirror. For a given amount of money, much larger reflecting telescope can be built than a refracting. For very large telescopes, the lenses needed would be enormous and next to impossible to make optically perfect. Consequently, most telescopes are reflecting.
Why are most large telescope reflecting telescopes?
It is cheaper and easier to create mirrors rather than lenses. Large lenses become difficult to support the larger they become. Additionally, mirrored telescopes fold light waves so that a telescope can be shorter, the same size telescopes with lenses are greater in length.
Reflecting telescopes differ from refracting telescopes in having what?
Two large objective lenses.
What is better Reflecting or refracting telescopes?
The most serious astronomical research, such as that done by the Hubble Space Telescope, is done with reflecting telescopes.
How are reflecting and refracting telescopes different?
reflecting telescopes have concave lenses and refraccting telescopes have convex lenses.
What are reflecting and refracting telescopes designed for?
Light is found by reflecting telescopes and refracting telescopes are used to dected sound
Is refracting telescopes bigger then reflecting telescopes?
No
Why are most large telescope reflecting telescope?
They are much shorter than refracting telescopes, hence, much cheaper to buy and easier to transport.
Which telescope is bigger refracting or reflecting?
"To build a large refracting telescope would require very strong supports to hold large enough lenses. These supports would tend to block out important light. So the refracting telescope is limited in its use. Today most large telescopes are reflecting telescopes." ~ BYU Home Study Astronomy course
Why are most modern telescopes reflecting telescopes?
A reflecting telescope is much easier to build than a refracting telescope and consequently is much less expensive. A reflecting telescope uses a concave mirror to collect and concentrate starlight and send it to your eye, whereas a refracting telescope uses a series of lenses to do the same thing. Optical quality lenses are much more expensive (and heavier) than a well-made mirror. For a given amount of money, much larger reflecting telescope can be built than a refracting. For very large telescopes, the lenses needed would be enormous and next to impossible to make optically perfect. Consequently, most telescopes are reflecting.
How are refraction telescopes and reflecting telescopes similar?
they the same
Why are most large telescope reflecting telescopes?
It is cheaper and easier to create mirrors rather than lenses. Large lenses become difficult to support the larger they become. Additionally, mirrored telescopes fold light waves so that a telescope can be shorter, the same size telescopes with lenses are greater in length.
Is the design of radio telescopes very similar to the design of refracting telescopes?
no, reflecting telescopes.
What advantage do reflecting telescopes hAve over refracting telescopes?
One advantage of reflecting telescopes is that the mirrors can be very big. Large mirrors allow reflecting telescopes to gather more light than refracting telescopes do. Another advantage is that curved mirrors are polished on their curved side, which prevents light from entering the glass. Thus any flaws in the glass do not affect the light. A third advantage is that mirrors can focus all colors of light to the same focal point. Therefore, reflecting telescopes allow all colors of light from an object to be seen in focus at the same time.
