Telescopes - Principle of operation and Factors that sway Its Properties

Telescopes are devices that are used to view the distant objects. They find its use in astronomy and physics. It enables you to view the distant objects by magnifying them. There are many types of telescopes and their prices vary according to the specifications. Many accessories are also ready that can be used in conjunction with the telescopes. Small telescopes that are used as toys are also capable of viewing some objects colse to 50 meters away.

Principle in which the telescope works

Telescope

The principle in which the telescope works is very simple. There are two lenses that make up the task of viewing the objects that are at a distance. One of the lenses picks up the light from the object viewed and makes it ready at a focus point. another lens picks up the exciting light from the focus point and spreads it out to your retina so that you can view. The lens that picks up the light from the object is called the objective lens or traditional mirror. The lens that picks up the light from the focal point is called the eyepiece lens.

Factors that affect the viewing of the object

The capability of the telescope to acquire the light from the object that is viewed and the capability to progress the image are the factors that affect the efficiency of the telescope. The capability to acquire light from the object depends on the diameter of the lens or mirror, which is otherwise called the aperture. The larger the aperture the more the light it can collect. Enlarging of an image depends on the compound of the lenses that are used. The eyepiece in the telescope performs the magnification.

Some of the world's largest optic telescopes in operation

We say a telescope to be larger based on the aperture size. Based on this we can say that Keck and Keck Ii are the largest telescopes in carrying out with an aperture of 10 meters diameter. The Keck telescope is composed of 36 mirror segments. This is settled at Mauna Kea, Hawaii. The next largest is Hobby-Eberly settled at Mt. Fowlkes, Texas which has an aperture of 9.2 meters. You can get a list of the largest optic telescopes at http://astro.nineplanets.org/bigeyes.html.

Choosing your telescope

The selection of the telescope largely depends on what you want to observe. You can choose compound telescopes and refractor type of telescope for viewing straight through the urban skies. For the rural skies, you can use compound telescopes and reflectors. They are best than the refractors type of telescopes. Each type has its own advantages and disadvantages. Hence, many population have different telescope for different purposes.

Telescopes - Principle of operation and Factors that sway Its Properties

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