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A telescope is an optical instrument that aids in the observation of remote objects by collecting ... In the 20th century many new types of telescopes were invented, including ... Telescopes may be ...

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.

It takes more than one kind of telescope to see the light - NASA ...


Apr 20, 1999 ... Why we need different types of telescopes to look at outer space ... By using a curved mirror to reflect and focus the light inside the tube, he was ... Mexico (right) , composed of 27 antennas electronically combined to give the ...

Mirror Image: Reflection and Refraction of Light - Live Science


Oct 1, 2014 ... A mirror image is the result of light rays bounding off a reflective surface. ... by using a combination of lenses, or in the case of large telescopes, ... Focus. In a lens with a curved surface, parallel rays bend at different angles ... These lenses are often combined with a spherical shape to produce a toric or ....

N.A.A.'s "How Telescopes Work" Guide


Telescopes "do their magic" by gathering and focusing light. ... The other main type of telescope is the reflector; it uses a mirror or mirrors to ... their two sets of light rays reach the observer at slightly different incoming angles; ... Another major class is the Catadioptrics; these systems combine both mirrors and lens ...

Telescope Types - Fort Worth Astronomical Society


Apr 3, 2014 ... It uses a convex glass lens (to bend light and bring it into focus. ... Different wavelengths of light focus at different points within the lens (e.g. a prism ... A reflecting telescope uses a primary convex mirror which is curved to a ... The word catadioptric is derived by combining the term for an optical system that ...

Telescopes - Astronomy Notes


Mar 2, 2015 ... The reflector telescope uses a mirror to gather and focus light. ... This was the largest telescope for several decades (from 1948 to 1976), ...

Astronomy Notes 4 - Light and Telescopes


There are two different types of light shown, each with its own wavelength. ..... telescope operates by bringing light to a focus using a lens or several lenses. .... The main mirror of the Keck Telescope - multiple mirrors combined to act like a ...



A refracting telescope uses a lens to focus the incoming light. ..... believed feasible, and can combine many smaller mirrors into the equivalent of a much larger ...

Telescopes From the Ground Up - Science Background


What are the different types of mirrors and how do they compare? ... What are arrays and how are the signals combined? ... Visible light covers the range of wavelengths from 400–700 nanometers (from the size of a molecule to a protozoan). .... The other mounting type uses axes parallel and perpendicular to Earth's axis of ...

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Chapter 3, Chapter Review


Reflecting telescopes use a mirror to concentrate and focus the light. ... Using active optics, in which a telescope's environment and focus are ... and hence improve its resolution, several instruments may be combined into an interferometer.

telescope Facts, information, pictures | Encyclopedia.com articles ...


telescope traditionally, a system of lenses, mirrors, or both, used to gather light from a ... Reflecting telescopes have several advantages over refracting designs. .... These new telescopes, combined with quantum-limited detectors, distortion reduction ... which uses a series of lenses or a curved mirror to focus visible light.

How They Work - How Telescopes Work | HowStuffWorks


The reflector telescope, which uses mirrors instead of the lenses. Both types accomplish exactly the same thing, but in completely different ways. ... An eyepiece lens takes the bright light from the focus of the objective lens or primary mirror and ... When you combine the objective lens or primary mirror with the eyepiece, you ....