How does an astronomical telescope differ from a terrestrial telescope?

As you may have guessed, astronomical telescopes are used to look at things not on the Earth and terrestrial telescopes look at things on the Earth. An astronomical telescope uses another, smaller lens to focus the light from the small image into our eye. The problem with this is that the image is upside down!

What is the difference between two lenses used in astronomical telescope?

The astronomical telescope makes use of two positive lenses: the objective, which forms the image of a distant object at its focal length, and the eyepiece, which acts as a simple magnifier with which to view the image formed by the objective.

How many lenses are used in terrestrial telescope?

three lenses
A terrestrial telescope uses three convex (converging) lenses as you can see in the ray diagram below. The three lenses are called the objective lens, the erecting lens and the eye lens. The rays of light from a very far object are incident on the objective lens.

What is astronomical telescope?

Definition of astronomical telescope : a telescope that is designed for observing celestial bodies and that requires no image-erecting system — compare terrestrial telescope.

What is the advantage of a terrestrial telescope?

Because of the protective effect of the atmosphere, ground-based telescopes can’t pick up the lethal, invisible portions of the electromagnetic spectrum such as ultraviolet rays, x-rays and gamma rays. These parts of the spectrum help astronomers extract better pictures of stars and other space phenomena.

What are the two lenses in a telescope called?

They focus the light and make distant objects appear brighter, clearer and magnified. This type of telescope is called a refracting telescope. Most refracting telescopes use two main lenses. The largest lens is called the objective lens, and the smaller lens used for viewing is called the eyepiece lens.

What is the distance between two lenses in a telescope?

How far apart should the two lenses be to make a telescope? Find qo and pe (in the notation of the thin lens equation) where the subscripts o and e refer to the objective and the eyepiece respectively. The distance between the lenses is just their sum qo+pe.

What are the two most important properties of a telescope quizlet?

The two most important properties of a telescope are its light-collecting area and its angular resolution.

What type of lens is used in microscope and telescope?

The objective lens is a convex lens of short focal length (i.e., high power) with typical magnification from 5× to 100×. The eyepiece, also referred to as the ocular, is a convex lens of longer focal length.