Which type of telescope detects radiation?

Answer 1

Because different objects give out electromagnetic radiation at different frequencies. Some objects are very easily viewed in the visible spectrum, others are essentially invisible in that spectrum. Also, some types of electromagnetic radiation can more easily penetrate dust and other debris between the source and Earth. Visible light is very easily blocked by dust, but x-rays for example can pass through them pretty much intact.

Answer 2

Radio telescopes monitor radio signals from outer space. The signals are analysed and classified by type to determine the nature of the source and widen our knowledge of astrophysics and cosmology.

Answer 3

An astronomical telescope that detects radiation is called a radio telescope. These telescopes are used to observe different wavelengths of electromagnetic radiation in the radio spectrum emitted by celestial objects.

Answer 4

Microwave telescopes can allow us to see the sky in microwave frequencies. There are microwave sources that are invisible to optical telescopes, and there may be gas or dust clouds that block visible light but allow some microwaves to penetrate. A breathtaking example of the use of a microwave telescope is seen in the microwave mapping of the sky.

As we understand it, the universe began with the Big Bang, which was that massive outrush of energy at the beginning of time. Almost everywhere in space we see microwave radiation, and that microwave radiation is the "echo" of the Big Bang. It's called cosmic microwave background radiation (CMB), and its discovery won the Nobel Prize for a pair of investigators.

Answer 5

Huge, dish shaped radio telescopes pick up radio waves from space. The dish gathers the signals and reflect them onto an aerial. The aerial sends electrical signals to a receiver, then to a computer, which converts them into a false-colour radio picture.

Answer 6

Very shortly after the first radio waves from space were detected, astronomers from

learned institutions all over the world met in convention to decide what to call the

equipment that would henceforth be used to work with this mysterious, unearthly

radiation. After the early, selfish, nationalistic suggestions were defeated, the

convention was split almost 50/50 into two competing groups, aligned in favor of

the two finalists. One side of the convention was convinced that the new instrument

should be referred to as the Penzias, while the other half were just as firmly insistent

that it should be called the Jansky-scope. After weeks of wrangling, bargaining, deadlock,

and bar tabs that the home institutions would no longer subsidize, the convention

collapsed in upon itself out of sheer exhaustion. Neither side had managed to budge

the other side so much as a single Ångstrøm in its direction in weeks, and the realization

began to dawn on them that they never would. Like unto Sir Isaac's gravitation itself,

the forces were precisely equal in both directions, and if the factions continued to strive,

they could expect nothing other than to circle their mutual center into eternity. It was

at that point that the convention came to its senses, the several representatives of

the distant and unrelated nations decided to surrender their non-negotiables, and to

compromise a little for heaven's sakes. They all gathered at the bar one last time, to

raise a toast to each other and to their unanimous agreement on the one designation

for the new radio-wave device to which not one of them had any objection, and it was

from that moment until our day that the telescope used to detect radio waves from the

stars and from the space between the stars has been known as: the Radio Telescope.

Answer 7

A radio telescope will, most of the time, look like a parabolic dish similar to what you would receive satellite TV on, but larger. The largest radio telescope is the Arecibo Observatory in Puerto Rico. It's 1,000 feet across.

Answer 8

Most types of telescope focus radiation. All but one do not actually detect it. The detection of radiation is undertaken by a sensor (a camera or the human eye) at the focus of the telescope.

The exception is a gamma ray detector which, as high energy gamma rays can not be focused, captures the effect that the gamma ray produces when it hits things (it causes a cascade in the atmosphere). A gamma ray detector may be able to tell you in which direction a gamma ray came from and how energetic it was but it can not actually form a image of the gamma ray source.

Answer 9

Radio telescopes allow you to see energy in the radio band below heat radiation. This gives a picture of lower energy activity in the universe. Optical telescopes allow you to see light energy or optical energy. X=ray telescopes allow you to see X-Ray energy activity.

Answer 10

Radio astronomy is a general term applied to the study of the radio emissions of stars and other objects in the heavens. Stars often give off visible light, which is electromagnetic energy. But they also emit a lot of electromagnetic energy below the optical band. These lower bands are given the general term radio bands, and a huge amount of work has been done (and continues) regarding imaging with radio waves. Radio astronomy actually outstrips optical astronomy in terms of how much it is used, though it almost certainly has a "lower profile" than observations made with the big optical telescopes. Different types of phenomenon or "reactions" occur in stars and other cosmological objects or structures, and these goings on result in the emission of energy (in different electromagnetic wavelengths). There are many that are only visible as radio sources, so we use radio astronomy to "see" them. We also use it to supplement imaging in optical wavelengths to give us better data as to what is out there.

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Radio Astronomy is an academic, scientific, investigative discipline wherein stars, planets, and the interstellar and intergalactic media are studied at electromagnetic wavelengths of millimeters and centimeters, rather than nanometers as in optical, x-ray, UV, and gamma-ray detecting instruments.