State Correct Terms for Optical and Radio Astronomy Flashcards

Astronomy  

28 cards   |   Total Attempts: 182
  

Cards In This Set

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Large reflector telescopes have the following significant advantages over large refractors:
Both mirrors are less expensive to fabricate than lenses and mirrors weigh less than lenses
Which of the following is an inherent disadvantage of radio telescopes?
The long wavelength of radio waves results in lower resolving power
Which of the following is a significant advantage of the HST compared to the 4-meter Kitt telescopes?
The HST isn't affected by atmospheric scintillation
Which of the following telescopes is most suitable for observing cool gas clouds?
Radio telescope
Which of the following is the most commonly used detector system in modern astronomy?
CCD's
Which device weighs less than lenses of the same size?
Mirrors
_____ is the most important quality of an astronomical telescope.
Resolving power
Which design parameter affects the light gathering power of a telescope?
Diameter
The major advantage of space-based telescopes is ______.
They are not affected by atmospheric scintillation
Gamma ray telescopes, such as the Chandra, are launched into space because they are dangerous to operate Earth.
False
The design of radio telescopes is very similar to the design of refracting telescopes.
False
To double the light gathering power of a telescope, we need to double the diameter.
False
Which design parameter affects the magnification of a telescope?
Lens
Which of the following quantities is most crucial in terms of the quality of a telescope?
Diameter of mirrors/lens
Which of the following telescopes would not be suitable for ground-based observations:
Only X-ray telescope and ultraviolet telescopes above would not be suitable.