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 Telescopes Can Use Lenses to Collect Visible Light

Telescopes can use lenses to collect visible light, allows the direct observation and photographic records of distant objects. Those who wear glasses are called telescope, because they are using the properties of refraction or diffraction of light. The largest astronomical telescope in the 40-in telescope at Yerkes Observatory in Williams Bay, Wisconsin, that was founded in the 19 Century. Lenses are bending different colors of light by different amounts, the approach of such different colors slightly differently. The images of the major objectives can be produced are colored, often made to limit the comments on the filters. Filter, to limit the image for an order that the colored lenses of light to any image in the same contours and make the image more accurate than a picture that includes all colors that form the light. Also, because the light must pass through the spectacles, the lenses can be promoted only on the very edges.

Reflecting telescopes use mirrors that are easier to manufacture than telescopes and reflects all colors of light as well. All the largest telescopes today are the telescopes. The single largest telescopes of the Keck telescopes on an Observatory Center in Hawaii, Keck telescope mirrors are 394 (10.0 meters) in diameter. That Observatory Center is located at an altitude of 4205 m (13,796 feet), is particularly high. Air on the observatory is very clear, large projects, there are many telescopes.

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