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40 Cards in this Set
- Front
- Back
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Who was the first astronomer to build a telescope for viewing the heavens?
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Galileo.
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What does the word "refract" mean?
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to bend
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What are three functions of a telescope?
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light gathering, magnification, and resolution
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What does a refractor telescope use to accomplish these three functions?
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lenses.
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What is the color distortion caused by lenses called?
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chromatic abberation
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Who was the first astronomer to build a telescope for viewing the heavens?
|
Galileo.
|
|
|
What does the word "refract" mean?
|
to bend
|
|
|
What are three functions of a telescope?
|
light gathering, magnification, and resolution
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|
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What does a refractor telescope use to accomplish these three functions?
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lenses.
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What is the color distortion caused by lenses called?
|
chromatic abberation
|
|
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Who was the first astronomer to build a telescope for viewing the heavens?
|
Galileo.
|
|
|
What does the word "refract" mean?
|
to bend
|
|
|
What are three functions of a telescope?
|
light gathering, magnification, and resolution
|
|
|
What does a refractor telescope use to accomplish these three functions?
|
lenses.
|
|
|
What is the color distortion caused by lenses called?
|
chromatic abberation
|
|
|
Who was the first astronomer to build a telescope for viewing the heavens?
|
Galileo.
|
|
|
What does the word "refract" mean?
|
to bend
|
|
|
What are three functions of a telescope?
|
light gathering, magnification, and resolution
|
|
|
What does a refractor telescope use to accomplish these three functions?
|
lenses.
|
|
|
What is the color distortion caused by lenses called?
|
chromatic abberation
|
|
|
Who was the first astronomer to build a telescope for viewing the heavens?
|
Galileo.
|
|
|
What does the word "refract" mean?
|
to bend
|
|
|
What are three functions of a telescope?
|
light gathering, magnification, and resolution
|
|
|
What does a refractor telescope use to accomplish these three functions?
|
lenses.
|
|
|
What is the color distortion caused by lenses called?
|
chromatic abberation
|
|
|
Who was the first astronomer to build a telescope for viewing the heavens?
|
Galileo.
|
|
|
What does the word "refract" mean?
|
to bend
|
|
|
What are three functions of a telescope?
|
light gathering, magnification, and resolution
|
|
|
What does a refractor telescope use to accomplish these three functions?
|
lenses.
|
|
|
What is the color distortion caused by lenses called?
|
chromatic abberation
|
|
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Name a common type of nonoptical telescope in use on the earth today.
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radio telescope (x-ray telescope)
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How can nonoptical telescope detect the kind of radiation that is filtered out by the atmosphere?
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nonoptical telescopes can detect radiation that is filtered out by the atmosphere because they are placed above the atmosphere by ballons, rockets, or airplanes.
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LIst two types of telescope mounts.
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equatorial and altazimuth
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How are images from optical telescopes recorded?
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on photographic film
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How are images from nonoptical telescopes usually recorded?
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on magnetic tape or strip charts
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What two methods do astronomers have for describing where in the sky an object may be found.
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using constellations; using coordinates
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An area in the sky with imaginary boundaries running north, south, east, and west is called by what name?
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a constellation
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Who introduced an orderly system for identifying particular stars within a constellation?
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John Bayer
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How many constellations are there?
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eighty-eight
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How did Bayer generally designate the brightest star in a constellation?
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by assigning the greek letter Alpha the the Latan name of the constellation.
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