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Radio Telescopes


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What do radio telescopes do?

Track and collect data from satellites
Monitor radio signals from outer space
Detect weather, other planets, stars, and other astronomical objects


What can a small radio telescope do?

Detect stronger radio sources
Look for high energy pulses
Detect meteors
Mapping


What is a radio telescope

Very sensitive radio receiver
Measures the intensity of radio waves
Shoots a small beam to detect the signals

How are they made?

A parabolic shaped dish
An antenna mounted on top of the dish
An amplifier is used gain a stronger signal
All the information is sent to a computer


Basic radio telescope

The dish reflects radio waves to the antenna
The antenna sends the signal to the amplifier
The information is recorded onto a computer


How do they work?

Uses a parabolic shaped dish that reflects radio waves to an antenna
The signal is sent to an amplifier to magnify the signal
The signal is processed by a computer to turn the signal into a picture


Radio telescopes vs. Optical telescopes

Radio telescopes are much larger due to wavelength size
Radio telescopes use lower energy than optical telescopes
Both use parabolic shaped dishes


The first radio telescope

Built by Karl Jansky
Made on accident in 1931
He recorded thunderstorms and categorized them in different categories


Types of radio telescopes

There are many different sizes and designs of radio telescopes
A few different kinds are
Haystack radio telescope
Westford radio telescope
Arecibo radio telescope


Haystack radio telescope

Controlled by remote
Used mainly for education and space tracking
Usually smaller telescopes

Westford radio telescope

Dome shaped telescope
Made in 1961
Used in communications technology


What does a radio telescope listen to?

If listened to a radio telescope all you would hear is static
Scientist listen for man made signals

Discoveries

Discovered that the sun and the center of the Milky way galaxy have strong radio waves
There are strong radio waves coming from black places in the galaxy
They helped discover the black places were exploded stars