- 1 What are some factors astronomers consider when selecting an observatory site?
- 2 Why do astronomers build telescopes on top of mountains?
- 3 Why do astronomers build observatories for optical telescopes on top of mountains in the desert Choose all that apply?
- 4 What is the best reason to put a visible light telescope in space instead of on the ground?
- 5 Which attributes of a telescope improve when increasing the size of the mirror?
- 6 What are the factors involved in good seeing for a telescope?
- 7 Why don’t we put observatories and telescopes at the tops of the tallest mountains?
- 8 Where is the best place to put a telescope on Earth?
- 9 What are two key advantages of space telescopes?
- 10 What are the benefits of placing an optical telescope on top of a mountain?
- 11 Can you look at mountains with a telescope?
- 12 What is unique about a Cassegrain telescope?
- 13 How do professional telescopes record images today?
- 14 What does a larger light collecting area allow a telescope to do?
- 15 How much more light collecting area does a 10 inch telescope have than a 5 inch telescope group of answer choices?
What are some factors astronomers consider when selecting an observatory site?
The factors which dictate whether or not an astronomical site is a good one are discussed below.
- cloud cover.
- light pollution.
- height above sea level.
- political stability.
- other factors.
Why do astronomers build telescopes on top of mountains?
The reason large telescopes are built on tall mountains or put in space is to get away from the distortion of starlight due to the atmosphere. Because of the elevation, the telescopes are above most of the water vapor in the atmosphere, so infrared astronomy can be done.
Why do astronomers build observatories for optical telescopes on top of mountains in the desert Choose all that apply?
Optical astronomers put their telescopes on top of mountains to get above the cloud level (as far as possible) and to get away from the light pollution of cities so as to get the best view of the night sky. Also if it is atop a mountain then there isn’t some big thing like a building or trees etc blocking the view.
What is the best reason to put a visible light telescope in space instead of on the ground?
The main reason we put telescopes into space is to get around the Earth’s atmosphere so that we can get a clearer view of the planets, stars, and galaxies that we are studying. Our atmosphere acts like a protective blanket letting only some light through while blocking others.
Which attributes of a telescope improve when increasing the size of the mirror?
Mirrors can be built much larger, and supported from the back with no light blockage. enhanced resolution and light-collecting ability. Optical interferometry is used with ground-based telescopes to further improve their resolution.
What are the factors involved in good seeing for a telescope?
Environmental Factors: Seeing conditions, the Moon, light pollution, and clouds all affect the quality and accuracy of astronomical observations and images. Astronomical seeing describes the conditions of the night sky and how suitable it is for astronomical observations.
Why don’t we put observatories and telescopes at the tops of the tallest mountains?
As light passes through the atmosphere, it is distorted by the turbulence within the air. Astronomers can improve their chances of a good image by putting observatories on mountain – tops (above some of the atmosphere), but there will still be limits to how crisp their images will be, especially for faint sources.
Where is the best place to put a telescope on Earth?
For optical telescopes, most ground-based observatories are located far from major centers of population, to avoid the effects of light pollution. The ideal locations for modern observatories are sites that have dark skies, a large percentage of clear nights per year, dry air, and are at high elevations.
What are two key advantages of space telescopes?
Space telescopes have the advantage of being above the blurring effects of the Earth’s atmosphere. In addition, there are many wavelengths from the electromagnetic spectrum that do not reach Earth because they are absorbed or reflected by the Earth’s atmosphere.
What are the benefits of placing an optical telescope on top of a mountain?
The observatories are built on mountain tops because there is less atmosphere at a higher elevation. The air is dry which means there is less water vapor that refracts light and less light distortion. Also, the air is cleaner so there is smaller atmospheric turbulence which is causing image distortion too.
Can you look at mountains with a telescope?
Yes. Most consumer telescopes can be used for terrestrial viewing (or at least the ones I have used) and are often utilized for wildlife viewing or other uses for extreme telephoto requirements.
What is unique about a Cassegrain telescope?
“Classic” Cassegrain telescopes The “classic” Cassegrain has a parabolic primary mirror and a hyperbolic secondary mirror that reflects the light back down through a hole in the primary. Folding the optics makes this a compact design. It makes use of the special properties of parabolic and hyperbolic reflectors.
How do professional telescopes record images today?
Today, the image is generally detected with sensors similar to those in digital cameras, recorded electronically, and stored in computers. This permanent record can then be used for detailed and quantitative studies. Professional astronomers rarely look through the large telescopes that they use for their research.
What does a larger light collecting area allow a telescope to do?
The amount of light emitted by a faint and remote galaxy is constant per unit area as it reaches the earth, so making the collecting area of a telescope as large as possible helps to collect those precious photons so that they all contribute to the final image.
How much more light collecting area does a 10 inch telescope have than a 5 inch telescope group of answer choices?
Collect more light: in order to detect fainter objects. This is the most important function of telescopes. Thus, a 10 -in diameter telescope collects ( 10 / 5 )2 = 22 = 4 times as much light as a 5 -in telescope. An 8-in telescope (widely used by amateur astronomers) collects 1600x more light than the human eye.