The telescope - reflector telescope preface.

Telescopes are essentially two types - reflectors and refractors. The fundamental difference between the two types is the type of glass to collect sunlight. Refractors use lenses while using the display glass. Back to school physics that light from a clear distance, objects such as items of a parallel beam. This type of parallel light rays, a parabolic reflector telescopes Television.

The parabolic mirror focus each color of the beam parallel to a point. Because this type of glass, the type of reflector telescope is hesitant. Person is important to note that no experience Reflectors chromatic aberrations, a problem for refractors. Because, unlike refraction will change the way the different wavelength than damaged glass all wavelengths.

The advantage is that they are on the increase in quality. Moreover, because the reflected light, but should reflect the entire surface. In the case of refractors, the light is programmed to be a part of two violations of the lens surface should be well polished.

Astronomers want to preserve the general scope, but has disadvantages. The most formidable difficulty in the correct position of the glass. Reflectors are marked by pipe to the main elements of the eye for normal cleaning and maintenance. The telescope image is blurred and ambiguous treatment. There is also a case of secondary mirror to correct the light of a particular site. Secondary mirror can also affect image quality.

Problems with two of the largest Reflectors and refractors a final image is the image upside down. One solution is the wrong position or Prisms of succession in light inverted image for backup image in the eyes. This is due to inheritance or prism, for example, convert the images directly rays.

Items on the display glass said fire. Secondary mirror is smaller than the primary mirror. Historical accounts Sir Isaac Newton used a flat mirror tilted at 45 degrees and the secondary mirror. Objective is to change the glass to turn their eyes at the end of the tube. This agreement is known as today. Newton-design and find buyers.

Only the type of design that Cassegrain reflector telescope design. This section provides the background for a better primary mirror. This design, you can position the display for the convenience of their own. Most advanced telescopes such as Hubble space telescope used this design and implementation of the astronomers as binoculars and not distracted.

by John B Mayall