Refracting telescopes explained

Telescopes are instruments used to view the objects at a distance in general. They use different frequency light waves of the electromagnetic spectrum to focus the light and produce the image.

They are used in astronomy, though they find uses in non-astronomical areas also. They can be used to observe and study the complexities of the electromagnetic waves also.

The telescopes come in different forms on the basis of the working and the frequency range in which they can work. The main divisions of the telescope essentially include the optical telescopes and the radio telescopes. The most widely used ones is the optical telescope.

There are different classes that come in the optical telescope. They include the reflecting and the refracting telescopes. They vary in the way in which they capture the light and focus it.

The reflecting telescopes generally use both concave and convex lens and focus the light. There is another category of optical telescopes called refracting telescopes.

Refracting telescopes make use of the lenses. They usually focus the light waves with the help of these lenses. They find a wide range of applications in astronomy, though the applications include non-astronomical uses as in binoculars and cameras.

These are the first formed ones that fall under the category of optical telescopes.

The telescope consists of lenses and an eyepiece. This combination can get a better collection of the light waves. This amount will be more than that can be collected with the naked human eyes.

This can absorb the light and can give a better view of the image with a magnified and bright image. The working is with the help of the refraction of light.

The parallel light can converge on points and those that are not parallel can converge to a plane.  The refracting telescopes are also called by the name refractors.

There are different classes of refracting telescopes. They are Galilean telescope, Keplerian Telescope, Achromatic refractors and Apo chromatic refractors. The objective lens of the Galilean telescope is convex where as the eyepiece is a concave lens. These telescopes where earlier used for the viewing of sky.

The keplerian telescope uses the concave lens for the eyepiece also. It has several advantages over the Galilean telescope. The view is better and brighter than the Galilean telescope.

This is the special feature of the converging lenses that are used here. Achromatic refractors are used to get the difference in wavelength to focus in a better mode. Apo chromatic telescopes can bring together three wave lengths. 

There are problems associated with the refracting telescopes. They have glass defects and aberration effects which are widely criticized. But because of the wide uses that it serves in different areas, they are widely appreciated and used in various areas.

This includes both astronomical and non-astronomical areas. Any way the working of refracting telescopes is being used in these research areas because of the great chances that it offers.