Telescope - principle of operation and factors affecting its performance

A telescope is a device used to view distant objects. They found its application in astronomy and physics. It allows you to zoom in to view distant objects. There are many types of telescopes whose prices vary according to specifications. Many accessories can also be used with the telescope. The small telescope used as a toy can also observe some objects 50 meters away.

Telescope working principle

The principle of working with a telescope is very simple. There are two shots to complete the task of viewing distant objects. One of the shots picks up the light from the object being viewed and makes it available at the focus. The other lens picks up the bright light from the focus and spreads it to the retina so you can watch it. The lens that picks up the light of the object is called the objective lens or the main mirror. A lens that picks up light from a focus is called an eyepiece.

Factors affecting object viewing

The ability of a telescope to collect the light of an object being observed and to magnify an image is a factor that affects the efficiency of the telescope. The ability to collect light from an object depends on the diameter of the lens or mirror, otherwise known as the aperture. The larger the aperture, the more light it can collect. Magnifying the image depends on the combination of lenses used. The eyepiece in the telescope performs amplification.

Some of the world's largest optical telescopes are in operation

We say that the telescope becomes larger depending on the aperture size. Based on this, we can say that Keck and Keck II are the largest telescopes with a diameter of 10 meters. The Keck telescope consists of 36 mirror segments. It is located in Mauna Kea, Hawaii. The second largest is Hobby-Eberly at Mt. Fork, Texas, has an aperture of 9.2 meters. You can get a list of the largest optical telescopes at http://astro.nineplanets.org/bigeyes.html.

Choose your telescope

The choice of telescope depends largely on what you want to see. You can choose between a composite telescope and a refracting telescope for viewing in the city sky. For rural skies, you can use composite telescopes and mirrors. They are better than refractometer type telescopes. Each type has its own advantages and disadvantages. Here, many people have different telescopes for different purposes.

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