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Radio Telescopes - Research Paper

Radio Telescopes

4. Radio telescopes tucked into valleys can "hide" in there from interference that may be radiated into the side of the antenna array from earth sources. Better shielding equals less noise (interference) and greater resolution of a desired signal.

Remember that radio telescopes are highly directional, and they don't "see" signals to the sides well. Now consider the "closeness" of a source on earth compared to any space object that is an image objective. There is no comparison. Any source of interference on earth will be a zillion times "closer" and the signal will be a zillion times "larger" than a space objective, even though the noise is "coming in from the side" to hit the dish. ...

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and 1˛=1

Problems:

3. A telescope with an aperture of 5 m can gather 19.6 square metres of light.

area = pi x radius squared
area = 3.141592654 x 2.5^2 = 19.6 square metres

A telescope with an aperture of 0.5 m can gather 0.196 square metres of light.

area = pi x radius squared
area = 3.141592654 x 0.25^2 = 0.196 square metres

Therefore, the larger telescope can gather 100x as much light as the smaller telescope.

5. In good seeing, you should see two well-separated stars with their first diffraction rings almost touching.

8. 0.013 m/ 1.3 cm/ 0.5 ...

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Radio Telescopes. (2011, May 13). Retrieved November 23, 2024, from http://www.essayworld.com/essays/Radio-Telescopes/99131

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PAPER DETAILS

Added: 5/13/2011 05:56:21 AM
Submitted By: davidlabra
Category: Astronomy
Type: Free Paper
Words: 281
Pages: 2

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