Question 1

The Chandra X-ray Observatory must use:

Accepted Answer

A)  a lens of fluorite.
B)  grazing incidence optics to focus the short wavelengths.
C)  a Newtonian reflecting design to avoid chromatic aberration.
D)  X-ray photographic plates instead of CCDs for imaging.
E)  a Schmidt corrector plate to avoid spherical aberration.F) A) and E)
G) A) and D)

Question 2

What type of telescope is the Subaru telescope (shown below) ?

Accepted Answer

A)  prime focus reflector
B)  single lens refractor
C)  achromatic refractor
D)  Newtonian reflector
E)  Cassegrain reflectorF) C) and E)
G) A) and E)

Question 3

What problem does adaptive optics correct?

Accepted Answer

A)  defects in the optics of the telescope, such as the original Hubble mirror
B)  the opacity of the Earth's atmosphere to some wavelengths of light
C)  the light pollution of urban areas
D)  turbulence in the Earth's atmosphere which creates twinkling
E)  chromatic aberration due to use of only a single lens objectiveF) All of the above
G) A) and E)

Question 4

Why is the image seen in astronomical telescope eyepieces inverted?

Accepted Answer

As the eyepiece must lie behin...

Question 5

The name of the Infrared Orbiting Observatory launched in 2003 is the:

Accepted Answer

A)  Hubble Space Telescope.
B)  Compton Observatory.
C)  Spitzer Space Telescope.
D)  Chandra Orbiting Telescope.
E)  Newton Imaging System.F) A) and B)
G) A) and C)

Question 6

Radio dishes are large in order to:

Accepted Answer

A)  attract funding from NASA and the NSF.
B)  give greater magnification.
C)  increase their angular resolution and collect the very weak radio photons.
D)  increase the range of waves they can collect.
E)  detect shorter waves than optical telescopes for superior resolution.F) B) and E)
G) A) and C)

Question 7

A mountain top is an especially good site for infrared telescopes since:

Accepted Answer

A)  there you are closer to celestial objects.
B)  you are above most of the carbon dioxide and water vapor in the atmosphere.
C)  the cold weather helps the sensitivity of infrared detectors.
D)  less air above means better seeing in many cases.
E)  All of the above are factors.F) C) and E)
G) D) and E)

Question 8

The simplest reflecting telescope design, by Isaac Newton, uses only a primary mirror.

Accepted Answer

A) True 
 B)False

Question 9

The primary purpose of a telescope is to:

Accepted Answer

A)  collect a large amount of light and bring it into focus.
B)  magnify distant objects.
C)  separate light into its component wavelengths.
D)  make distant objects appear nearby.
E)  measure the brightness of stars very accurately.F) A) and E)
G) All of the above

Question 10

What is the light-gathering power of an 8-inch telescope compared to a 4-inch telescope?

Accepted Answer

A)  2 times better
B)  4 times better
C)  8 times better
D)  16 times better
E)  32 times betterF) B) and D)
G) B) and C)

Question 11

A convex lens is thinnest in its center; it refracts light to a focus, while a convex mirrorreflects it to the focus instead.

Accepted Answer

A) True 
 B)False

Exam 5: Telescopes: The Tools of Astronomy

The primary purpose of a telescope is to:

Correct Answer
verified

The Chandra X-ray Observatory must use:

Correct Answer
verified

A convex lens is thinnest in its center; it refracts light to a focus, while a convex mirrorreflects it to the focus instead.

Correct Answer
verified

The name of the Infrared Orbiting Observatory launched in 2003 is the:

Correct Answer
verified

A mountain top is an especially good site for infrared telescopes since:

Correct Answer
verified

What is the light-gathering power of an 8-inch telescope compared to a 4-inch telescope?

Correct Answer
verified

Radio dishes are large in order to:

Correct Answer
verified

What type of telescope is the Subaru telescope (shown below) ? $What type of telescope is the Subaru telescope (shown below) ? A) prime focus reflector B) single lens refractor C) achromatic refractor D) Newtonian reflector E) Cassegrain reflector$

Correct Answer
verified

The simplest reflecting telescope design, by Isaac Newton, uses only a primary mirror.

Correct Answer
verified

What problem does adaptive optics correct?

Correct Answer
verified

Why is the image seen in astronomical telescope eyepieces inverted?

Correct Answer
verified
As the eyepiece must lie behin...
View Answer

Exam 5: Telescopes: The Tools of Astronomy

The primary purpose of a telescope is to:

Correct AnswerverifiedShow Answer

The Chandra X-ray Observatory must use:

Correct AnswerverifiedShow Answer

A convex lens is thinnest in its center; it refracts light to a focus, while a convex mirrorreflects it to the focus instead.

Correct AnswerverifiedShow Answer

The name of the Infrared Orbiting Observatory launched in 2003 is the:

Correct AnswerverifiedShow Answer

A mountain top is an especially good site for infrared telescopes since:

Correct AnswerverifiedShow Answer

What is the light-gathering power of an 8-inch telescope compared to a 4-inch telescope?

Correct AnswerverifiedShow Answer

Radio dishes are large in order to:

Correct AnswerverifiedShow Answer

What type of telescope is the Subaru telescope (shown below) ?

Correct AnswerverifiedShow Answer

The simplest reflecting telescope design, by Isaac Newton, uses only a primary mirror.

Correct AnswerverifiedShow Answer

What problem does adaptive optics correct?

Correct AnswerverifiedShow Answer

Why is the image seen in astronomical telescope eyepieces inverted?

Correct AnswerverifiedAs the eyepiece must lie behin...View AnswerShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What type of telescope is the Subaru telescope (shown below) ? $What type of telescope is the Subaru telescope (shown below) ? A) prime focus reflector B) single lens refractor C) achromatic refractor D) Newtonian reflector E) Cassegrain reflector$

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
As the eyepiece must lie behin...
View Answer