Review for chapter 5 test- Telescopes (Astronomy)
A refracting telescope is subject to chromatic _______.
A refracting telescope uses _______ to form an image.
A reflecting telescope uses _______ to form an image.
Linking separate telescopes so they act as one telescope producing more detailed images
Light is described as a particle like a photon and as a _____
Two types of optical telescopes
Instrument for viewing the spectrum of a light source
Distance between lens/mirror and the telescopes focus
Nearly all large optical telescopes today are _______ because they do not have chromatic aberration and they are cheaper
Charged coupled device (CCD)
A specialized computer chip containing a million microscopic light detectors
The use of computer technology to remove distortion of the atmosphere when viewing an object through a telescope
As light from a star passes through a lens the light is refracted. This causes the light to separate into the color spectrum, causing a halo of color around the edge of the object as seen through a telescope. This is called what?
A telescopes ability to collect light relies on what property of the lens/mirror
The ability to form a clear image
Earths atmosphere turbulence making images dance and blur and stars twinkle
The ability of a telescope to enlarge an image
A ________ ________ is less affected by the weather, they are less expensive, they can operate 24 hours a day, and they “see” through dust clouds
Astronomers often use space-based telescopes to collect information because earths atmosphere ________ most radiation
The highest part of a wave
The lowest part of a wave
The distance between the midline of the wave and either the crest or trough
The distance between crest and crest or trough and trough
______ waves have the shortest wavelength and the highest frequency
A form of energy that exhibits wavelike behavior as it travels through space
What rays may come from the sun, violent explosions of dying stars, and super massive black holes
The spitzer space telescope and the SOFIA are ______ telescopes and must be kept cool so they don’t detect their own heat
Hubble space telescope
The most successful telescope to orbit earth
The most important power in a telescope is the ______ power
In a refracting telescope the image appears to be what?
Astronomers study the spectrum of a star the spectral lines are used to _______ the elements in the star
The color with the longest wavelengths of visible light
Another name for the primary mirror/ lens of a telescope