# What is the main reason for using several radio telescopes together as an interferometer?

## What is a key reason for combining many radio telescopes together into an interferometer?

What is the main reason for combining many radio telescopes together into an interferometer with large distances between telescopes? To increase the effective diameter of the telescope. You just studied 15 terms!

## Why are radio telescopes combined?

The radio waves from a pair of telescopes are combined in a computer – a correlator – to create the virtual focus of a much larger radio telescope with the diameter equivalent to their separation. Each baseline gives you information about the sky but only at the resolution determined by the telescope spacing*.

Radio telescopes can be used in the daytime as well as at night. Radio waves are unaffected by the dust particles in space. Light waves are scattered by these dust particles and so never make it to Earth for detection.

## What is the purpose of interferometry?

Interferometers are investigative tools used in many fields of science and engineering. They are called interferometers because they work by merging two or more sources of light to create an interference pattern, which can be measured and analyzed; hence ‘Interfere-o-meter’, or interferometer.

## How much more light collecting area does a 10 inch telescope have than a 5 inch telescope group of answer choices?

Collect more light: in order to detect fainter objects. This is the most important function of telescopes. Thus, a 10-in diameter telescope collects (10/5)2 = 22 = 4 times as much light as a 5-in telescope. An 8-in telescope (widely used by amateur astronomers) collects 1600x more light than the human eye.

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## Which of the following is an advantage that a radio telescope has over an optical telescope?

Radio telescopes can be used day or night, they are much less affected by cloudy skies, and they open a new window to observe the Universe. They allow us to observe astronomical objects at a different wavelength than an optical telescope, thus giving an opportunity to compare and contrast the images.

## How far can a radio telescope see?

We can also use them to transmit and reflect radio light off of planetary bodies in our solar system. These specially-designed telescopes observe the longest wavelengths of light, ranging from 1 millimeter to over 10 meters long.

## Can radio telescopes see through clouds?

Some types of telescopes such as radio telescopes that “listen” for radio waves are not affected by clouds. Radio waves pass easily through clouds. If you have a telescope and are concerned that you will not be able to use it tonight because it is cloudy.

## Why do radio telescopes have poor resolving power?

Reduces the weight of the telescope, makes it stronger and less expensive. … Why do radio telescopes have relatively poor resolving power? At very long wavelengths like those of radio waves, the diffraction fringes are relatively large. The moon has no atmosphere at all.

Because of the ability to pass through the ionosphere, radio wave is suitable for satellite to earth transmission. Radio waves are suitable for long-distance transmission. However, radio waves have certain disadvantages. As it has low frequency, thus radio waves can’t send a lot of data at one time.

## What can a radio telescope see?

Besides observing energetic objects such as pulsars and quasars, radio telescopes are able to “image” most astronomical objects such as galaxies, nebulae, and even radio emissions from planets.

## What is the benefit of using arrays for radio astronomy?

The biggest advantage is that they can operate day and night and in nearly any type of weather. The arrays must also be made up of several to dozens of large and precise antenna to pick up the wavelengths because they’re very low energy.

## What is the principle of interferometry?

Interferometry makes use of the principle of superposition to combine waves in a way that will cause the result of their combination to have some meaningful property that is diagnostic of the original state of the waves.

## What does the technique of interferometry allow?

What does the technique of interferometry allow? It allows two or more telescopes to obtain the angular resolution of a single telescope much larger than any of the individual telescopes. … Telescopes can collect far more light with far better angular resolution.