0
What is the reason why most professional research telescopes are reflectors?
Wiki User
∙ 11y ago
There is distortion present in refracting telecopes that is not present in refracting telescopes. Namely, when light is refracted the shorter wavelengths are frefracted more than the longer ones. As a result, the different colors become separated, producing a rainbow effect. This becomes more pronounced at higher levels of magnification and there is a loss of detail in the image. This problem does not occur with reflecting telescopes, so they are able to obtain greater magnification with less distortion.
Wiki User
∙ 9y ago
Wiki User
∙ 11y agoLarge mirrors are easier to build than large lenses.
Add your answer:
Earn +20 pts
The primary reason for spreading many radio telescopes across a large area and combining the signals at a central station is?
To have better resolving power, and a much clearer image.
Can Refracting telescopes can be much larger than reflecting telescopes?
In principle, there's no reason why it couldn't be. But it would be prohibitively expensive, harder to operate mechanically, and tough to match the optical performance of an equal-sized reflector. That's why, bowing to pragmatism and practicality, there hasn't been a larger refractor built since the 40-incher at the Yerkes Observatory was completed in 1895.
What is the the primary reason for making telescopes very large?
Large telescopes are needed to collect the weak radiation, coming from faint or very distant sources. The larger the aperture, the brighter the final image will be. The aperture also has to be much larger than the wave length of the radiation being observed otherwise diffraction will spread the star light out and the image will be blurred not sharp. Radio waves have a very large wave length, so these telescopes are enormous! The resolving power of a telescope measures how well it can distinguish stars that appear close together. It depends on both the aperture size and the wavelength used. Aperture=light-gathering area of the telescope.
Why would radio astronomers build identical radio telescopes in different places around the world?
There are at least two reasons why identical radio telescopes may be built. A mundane reason would to save money by reusing the same design. But the reason why most identical systems are built (not to say that saving money by reusing the design isn't still a factor in these cases) is to construct a "very long baseline interferometer", a type of multiple telescope system that uses properties of electromagnetic radiation (wave interference) to simulate telescopes with much larger apertures. This method attains the angular resolution of the larger telescope, but not the signal sensitivity.
Which choice is stated in the research essay as a reason that plastic bags are a problem on beaches?
Plastic bags kill the marine creatures that eat them. -apex
Two reasons for sending telescopes into space?
One reason for sending telescopes into space is so that people can get a better look at the stars the second reason for this is so that scientist can discover more about stars.
Are reflecting telescopes are more popular than refracting telescopes?
In principle, there's no reason why it couldn't be. But it would be prohibitively expensive, harder to operate mechanically, and tough to match the optical performance of an equal-sized reflector. That's why, bowing to pragmatism and practicality, there hasn't been a larger refractor built since the 40-incher at the Yerkes Observatory was completed in 1895.
Why is it a advantage for reflecting and refracting telescopes to be made larger?
The reason people build larger Telescopes is because smaller telescopes have a smaller power to them, which results in less detail the farther they look. Larger telescopes use much larger lenses to see much farther and with much more clarity.
Why do astronomers currently prefer orbiting telescopes over earth based telescopes?
Orbiting telescopes are located in the sky, where it is not affected by the turbulence of the atmosphere, while ground-based telescopes are located on the ground, where the atmospheric turbulence (the moving of air) is greater. This is also the reason that some telescopes are built on mountains where the atmosphere is thinner and turbulence is smaller.
What is a major reason telescopes must be able to move?
because of the earth's rotation _________________________________________________________________________________ To continuously observe an object directly above the horizon at all times, telescopes must be able to move.
Why do astronomers currently prefer orbiting telescopes over earth-base telescope?
Orbiting telescopes are located in the sky, where it is not affected by the turbulence of the atmosphere, while ground-based telescopes are located on the ground, where the atmospheric turbulence (the moving of air) is greater. This is also the reason that some telescopes are built on mountains where the atmosphere is thinner and turbulence is smaller.
What is the main reason for positioning many radio telescopes across a large area?
To produce higher resolution images.
Why do pirates use spyglasses?
The same what sailors use as telescopes. The words are the same (Within reason). Sailors are not pirates.
What is one advantage to space telescopes?
Their advantage - the reason to have space telescopes at all - is that they don't have to look through Earth's atmosphere. This lets them get a clear picture; it also lets them work at certain frequencies that don't reach Earth.
Why paint a radio telescope?
No other reason but to protect the materials of which it's constructed from weather damage and deterioration. Unlike optical telescopes, few radio telescopes are situated inside structures that protect them from the elements, mainly because of their size.
Five main reasons why research is relevant in education?
Three reason why research is relevant in education
Why do you want telescopes in space?
The same reason you want them on earth. To see stuff too far away to see clearly with a pair of reading glasses.
