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Actually, they don't. They could've been Spuares, but Galileo had a different idea. Plus, they are a better shape for eyes.

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16y ago

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What advantages do reflecting telescopes have over refracting telescopes?

refracting telescopes use lenses instead of mirrors. 1. chromatic aberration: when light passes through a lens it is focused at different points. Blue focuses closer to lens and red farther creating a smeared image. 2. Some light is absorbed by lenses. 3. Lenses are heavy and can only be supported by the edge. 4. Lenses must have to optically acceptable surfaces whereas a mirror only needs one.


What are the disadvantages of telescopes?

Some disadvantages of telescopes include limited field of view, susceptibility to atmospheric conditions such as turbulence and light pollution, and the need for regular maintenance and calibration to ensure optimal performance. Additionally, high-quality telescopes can be expensive and may require specialized expertise to operate effectively.


What telescope uses an eyepiece and an objective lens?

Practically all telescopes which use lenses, normally the refracting type. the Reflector use objective Concave Mirrors, but even these need eyepieces or finder scopes.


How do telescopes help us see things in space?

Telescopes can let you see things that are far away.MMMMMMOOOOMMMMMMAAAAAYYYYYY11177777777Telescopes are used to seek out specific stars, planets, nebulas, comets, etc.Also, some other telescopes are used to just seek out objects at a far distance.Telescopes are very cool when you can spot planets outside in the dark sky! :)-MooMay17MMMMMMMOOOOOOMMMMMMAAAAAAYYYYY11111177


Why would some telescopes need to be in space and not on the surface of Earth?

cause they gather light and concentrate it.

Related Questions

Why can radio telescopes be used 24 hrs a day?

they do not need visivle light to obtain images


What advantages do reflecting telescopes have over refracting telescopes?

refracting telescopes use lenses instead of mirrors. 1. chromatic aberration: when light passes through a lens it is focused at different points. Blue focuses closer to lens and red farther creating a smeared image. 2. Some light is absorbed by lenses. 3. Lenses are heavy and can only be supported by the edge. 4. Lenses must have to optically acceptable surfaces whereas a mirror only needs one.


Why do scintists use telescopes?

They need to look at the stars


What are the disadvantages of telescopes?

Some disadvantages of telescopes include limited field of view, susceptibility to atmospheric conditions such as turbulence and light pollution, and the need for regular maintenance and calibration to ensure optimal performance. Additionally, high-quality telescopes can be expensive and may require specialized expertise to operate effectively.


Why do most professional astronomers use reflecting telescopes?

Bang for the buck. When you need to collect a lot of light to see faintcelestial objects clearly, a large mirror is cheaper and easier to manufacture without defects than asimilarly sized refracting lens.


Why do you need to put some telescopes in space?

Telescopes on Earth have to look through the atmosphere (air) which distorts the image. Telescopes in space dont have to look through the atmosphere and so the image is a lot clearer.


How many zoomed telescopes do I need to see Saturn's rings?

100


How do you replace the brake light bulb on a 2001 PT Cruiser?

Access to the brake light bulb is through the tail light lens. First, remove the tail light lens by removing the single star shaped screw that secures the lens. You do not need a special screwdriver or bit: a regular flathead screwdriver will work fine. Once the lens is removed, press in on the bulb and turn ever so slightly. Bulb will now pull out.


What lens will help if something is blurry?

You may need to adjust the focus of the lens or clean the lens to improve the clarity of the image. If the issue persists, you may need to check for any scratches or damage on the lens that could be causing the blur.


What lens cap size do I need for my camera?

To determine the correct lens cap size for your camera, you should look for the diameter measurement marked on the front of your camera lens. This measurement will indicate the size of the lens cap you need to purchase.


What size lens cap do I need for my camera?

To determine the size of the lens cap you need for your camera, you should look for the diameter measurement on the front of your camera lens. This measurement is usually in millimeters and will indicate the size of the lens cap you should purchase.


What size uv filter will my canon 1000d 18-55mm lens need and what size will your 55-250mm lens need?

58mm filter u need