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Telescopes just refract.
This is not completely true.
If we look at the HST (Hubble Space Telescope) this is a telescope that uses reflection rather than refraction.
Basically light enter the telescope and reflects of one concave mirror onto another concave mirror leading to a focal point where you can see an image.
(look on Google images "Hubbell's optics" and a little bit down there is a double diagram with a white background.")
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∙ 12y ago
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Reflecting telescopes differ from refracting telescopes in having?
A mirror instead of and objective lens (:
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
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.
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.
Reflecting telescopes differ from refracting telescopes in having?
A mirror instead of and objective lens (:
What type of telescopes uses a concave mirror?
A reflecting telescope.
What are the major types of optical telescopes?
Ground-based telescopes, and space telescopes. Or: refracting telescopes (main collector is a lens), and reflecting telescopes (main collector is a mirror). Or: Home telescopes (small ones), and professional ones (larger and more expensive).
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
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.
What kind of telescope uses a concave mirror?
Concave means bulging inward - reflecting telescopes use this sort of mirror. The first telescope designed to use one was invented by Isaac Newton and they are therefore called "Newtonian" telescopes.
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.
Is refracting telescopes bigger then reflecting telescopes?
No
How are refraction telescopes and reflecting telescopes similar?
they the same
How are reflecting and retracting telescopes different?
A reflecting telescope is different from a refracting telescope because a reflecting telescope uses a concave lens, a plane mirror, and a convex lens. While a refracting telescope uses two lens.
What type of lens is used in the eyepiece for reflecting telescopes?
A radio telescope is a reflecting telescope, and uses a mirror rather than a lens. Since radio waves are so much longer than light waves, the 'mirror' of a radio telescope is the 'dish' reflector that focuses radio waves onto its antenna, located at the prime focus of the dish.
