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What instruments use lenses or mirrors to collect and focus light from distant objects?
A Telescope uses lenses or mirrors to collect and focus light from distant objects. With the advancement in optical research we are capable to watch the stars and planets better than before. Our information about universe largely depend on telescopes.
What is the size of Lord Rosse's telescope lenses?
Lord Rosse's telescopes actually used mirrors rather than lenses. His four biggest telescopes were 15 inches, 24 inches, 36 inches and 72 inches.
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.
Why have no large refracting telescopes been built since 1900?
Refracting telescopes suffer from chromatic aberration, refracting telescopes have several surfaces to shape and polish, making large glass lenses without interior defects is very difficult, and large glass lenses are more difficult to support than large mirrors.
Reflecting telescopes are popular because they're than a refracting telescope?
Reflecting telescopes are popular because they are generally more compact and can be built in larger sizes without the issues of chromatic aberration that affect refracting telescopes. They use mirrors instead of lenses, which allows for a simpler design and easier manufacturing of large apertures. Additionally, mirrors can be supported from behind, reducing the risk of distortion that occurs with heavy lenses. Overall, these advantages make reflecting telescopes more versatile and effective for astronomical observations.
What instruments use lenses or mirrors to collect and focus light from distant objects?
A Telescope uses lenses or mirrors to collect and focus light from distant objects. With the advancement in optical research we are capable to watch the stars and planets better than before. Our information about universe largely depend on telescopes.
What is the size of Lord Rosse's telescope lenses?
Lord Rosse's telescopes actually used mirrors rather than lenses. His four biggest telescopes were 15 inches, 24 inches, 36 inches and 72 inches.
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.
Why have no large refracting telescopes been built since 1900?
Refracting telescopes suffer from chromatic aberration, refracting telescopes have several surfaces to shape and polish, making large glass lenses without interior defects is very difficult, and large glass lenses are more difficult to support than large mirrors.
Which of the following statements best describes the difference between a refracting telescope and a reflecting telescope?
A refracting telescope uses lenses to gather and focus light, while a reflecting telescope uses mirrors. Reflecting telescopes are often preferred for large astronomical telescopes because mirrors can be made larger and more easily than lenses.
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
Are reflecting or refracting telescopes more top heavy?
Refracting telescopes tend to be more top heavy than reflecting telescopes because the lens at the front of the telescope, which is used to gather light, can be heavier than the mirrors used in reflecting telescopes. This imbalance can make refracting telescopes more prone to tipping if not properly balanced or supported.
Do x ray and gamma ray telescopes have the same design as an optical instrument?
No, x-rays and gamma rays cannot be focused by lenses or conventional telescope mirrors. To make mirrors that will focus x-rays or gamma rays you need very shallow glancing angle mirrors, that are nearly just parabolically tapered tubes. Typically several of these tubes with the same focal point but different diameter are nested inside each other.
What Diverging mirrors and lenses always produce what kind of image?
Diverging mirrors and lenses always produce virtual images that are upright and smaller than the object being viewed.
Why are some telescopes stronger than other ones?
Because some have thicker lenses.
What is the difference between a reflecting telescope a refracting telescope and a radio telescope?
Reflecting telescopes are usually designed to capture and concentrate light through the use of a large concave mirror which focuses the captured light on a smaller, flat mirror which in turn reflects it to the eye or a camera. Refracting telescopes use convex lenses to capture light and focus it where the eye or a camera is. Radio telescopes collect long wavelength radiation (radio waves and microwaves) and are all forms of reflecting telescope. The first telescopes were refracting telescopes, because the technology existed to form the needed sizes of convex lenses. Reflecting telescopes were developed later, when advancing technology provided the means of making very regular concave mirrors. All the largest modern telescopes are variations on the reflecting telescope design because it is easier to make and manage very large concave mirrors than it is to make lenses of equivalent light collecting power.
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.
