Table of Contents
- 1 What kinds of problems occur with optical telescopes?
- 2 What was the problem with early telescopes?
- 3 What are problems with ground-based telescopes?
- 4 What are 2 problems with refracting telescopes?
- 5 Why do astronomers use different types of telescopes?
- 6 What kind of light can Newton’s reflecting telescope see?
What kinds of problems occur with optical telescopes?
The disadvantage is that the smaller optical telescopes cannot gather as much light, so they are not very powerful if you seek more distant objects like galaxies and nebulae.
What are the 3 disadvantages of ground-based telescopes over space telescopes?
Despite the convenience of ground telescopes, they do feature a few drawbacks that space telescopes don’t have.
- Lower Cost. Ground-based telescopes cost about 10 to 20 times less than a comparable space telescope.
- Maintenance Issues.
- Site Requirements.
- Image Quality.
- Deficient Data.
What are disadvantages of optical telescopes?
Disadvantages:
- Very high initial cost relative to reflector.
- A certain amount of secondary spectrum (chromatic aberration) unavoidable (reflector completely free of this) The colours cannot focus at one point.
- Long focal ratios can mean that the instrument is cumbersome.
What was the problem with early telescopes?
This was a problem that troubled telescope makers for centuries. It was also hard to shape the lenses perfectly. The images of stars were blurry, and surrounded by color haloes. The limiting factor of these early refractors was their small field of view.
What are 3 properties of optical telescopes?
Telescopes have three properties that aid astronomers: (1) light-gathering power, which is a function of the size of the objective—large objectives gather more light and therefore “see” farther into space; (2) resolving power, which allows for sharper images and finer details, is the ability of a telescope to separate …
What problem do refractor telescopes have that reflectors don t?
Test 1 (part 4)
| Question | Answer |
|---|---|
| What problem do refractor telescopes have that reflectors don’t? | chromatic aberration |
| A major advantage of a Newtonian reflector over a refractor is: | the elimination of chromatic aberration |
| Why are most large telescopes reflectors not refractors? | (all of the above) |
What are problems with ground-based telescopes?
In addition, turbulent motion in the atmosphere blurs the light travelling through it, causing objects to twinkle and appear fuzzy. Another problem with ground-based telescopes is that they are subject to local weather conditions, and high clouds can ruin the chance of making any useful observations.
Which of the following is a problem with ground-based telescopes?
Ground-based telescopes can’t do the same, because the Earth’s atmosphere absorbs a lot of the infrared and ultraviolet light that passes through it. Other space telescopes cannot be serviced this way.
What are the advantages and disadvantages of having telescopes in space?
In space, however, telescopes are able to geta clearer shot of everything from exploding stars to other galaxies. Another disadvantage for ground-basedtelescopes is that the Earth’s atmosphere absorbs much of the infrared andultraviolet light that passes through it. Space telescopes can detect thesewaves.
What are 2 problems with refracting telescopes?
The two problems with refracting telescopes are a chromatic aberration and spherical aberration.
What problem does the telescope solve?
Reflecting telescopes solve the problem of chromatic aberration, which often occurs with refracting telescopes.
How have telescopes changed the way scientists study our solar system?
Telescopes have opened our eyes to the universe. Later telescopes have revealed geography and weather on the planets in our solar system. Telescopes have also revealed new planets and asteroids. These instruments helped us make the first valid measurement of the speed of light.
Why do astronomers use different types of telescopes?
Although many astronomical puzzles can only be solved by comparing images of different wavelengths, telescopes are only designed to detect a particular portion of the electromagnetic spectrum. Astronomers therefore often use images from several different telescopes to study celestial phenomena.
What did the early telescopes show about the universe?
Early telescopes showed that Earth was not the center of the universe, as was previously believed. They also showed mountains and craters on the moon. Later telescopes have revealed geography and weather on the planets in our solar system. Telescopes have also revealed new planets and asteroids.
How did the reflecting telescope solve the chromatic aberration problem?
The reflecting telescope solved another problem inherent in the refracting telescope: chromatic aberration. described how white light is actually a mixture of colored light. Each color has its own degree of refraction, so curved lenses split white light into the colors of the spectrum.
What kind of light can Newton’s reflecting telescope see?
Yet another bonus of Newton’s reflecting telescope is that it can also be used to study ultraviolet and infrared light. The Hubble Space Telescope, famous for its stunning optical images of the universe, also works in the ultraviolet and infrared parts of the spectrum.