refracting telescope

The Telescope

Posted on by Ottoline Nevada

A telescope is a tool, an instrument utilized to perceive objects that are distant. Frequently, telescopes are made use of to view the stars, planets as well as other heavenly bodies.  Several of the identical optical technology utilized in telescopes is as well used to create cameras and binoculars.

Vital Attributes of Telescopes

Although a telescope has many attributes, there are two extremely vital properties to consider, the ability to gather light and magnification.

  • Ability to Gather Light

The better the ability of the telescope to amass light, the more you would be able to perceive stars that are farther away as well as other indistinct objects in the sky at night. This attribute is typically determined by the telescope’s aperture size. The bigger the aperture of the telescope, the more light it could gather.

  • Magnification

The telescope’s magnification depicts how much bigger the telescope could make objects look.

Major Types of Telescopes

Telescopes have two major types, the refracting telescopes and the reflecting telescopes. Refracting telescopes make use of lenses for the image to be magnified; a reflecting telescope focuses image’s light by making use of mirrors.

  • Refracting Telescopes

The lenses used in refracting telescopes bend light to a certain focal point in such a way that the object is magnified to the observer. A simple refracting telescope holds two lenses. The first is known as the objective lens, a convex lens which bends the inward light rays to a central point in the telescope. The second is known as the eyepiece, the lens that transmits light from the point of focus and distributes it around the retina of the viewer’s eye making the object appear much closer than it actually is.

  • Reflecting Telescopes

Rather than lenses, reflecting telescopes make use of mirrors for light to be focused. To collect light, a convex mirror is utilized and is reflected back to a point of focus. So as to let out light from telescope, one more mirror is utilized to guide the light into an eyepiece. Reflecting telescopes come in numerous designs; however the earliest design created by Isaac Newton is until now popular.

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