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Telescopes

A telescope is a device used to form images of distant objects. There are two kinds: an optical telescope uses lenses and is known as a refracting telescope or a refractor, and a reflecting telescope, which uses a mirror and is known as a reflecting telescope or a reflector. The earliest telescope was a refractor built by the Dutch eyeglass maker Hans Lippershey. This category is for questions related to telescopes, including using them to view distant planets and objects in space.

1,887 Questions

Why is a desert a good place to build a telescope?

Deserts have low humidity and minimal precipitation, which can provide clear and stable skies for observing the stars. Additionally, deserts typically have minimal light pollution, making them ideal for astronomical observations. The dry air in deserts also helps to reduce atmospheric distortion, allowing for clearer images of celestial objects.

What kind of scientist uses telescopes to study space?

An astronomer uses telescopes to study space. They observe celestial objects like stars, planets, galaxies, and other phenomena to understand the universe's properties and behavior.

What type of light can the hubble telescope use to see the images?

The Hubble Space Telescope primarily uses ultraviolet, visible, and near-infrared light to capture images of celestial objects. These wavelengths are ideal for observing astronomical phenomena such as stars, planets, and galaxies.

What would be the magnification of a telescope with a focal length of 3000 millimeters using an eyepiece of focal length equal to 15 mm?

The magnification of a telescope is calculated by dividing the focal length of the telescope by the focal length of the eyepiece. In this case, the magnification would be 3000 mm (telescope focal length) divided by 15 mm (eyepiece focal length), which equals a magnification of 200x.

How does a space elevator work in space?

A system of pulleys along a long carbon nanotube structure that reachs into space. There is a common misconception that there is not gravity in space, however this is not the case. Classified as microgravity it is still possible for basically anything that functions normally on earth to function normally in the microgravity of space.

Is right ascension measured in hours minutes and seconds?

Yes, right ascension is typically measured in hours, minutes, and seconds. It is one of the coordinates used in the equatorial coordinate system to locate objects in the sky.

What is the science behind microscopes and telescopes?

Microscopes use lenses and light to magnify and visualize tiny objects, allowing us to see details at the cellular and molecular level. Telescopes use mirrors or lenses to collect and focus light from distant objects, allowing us to observe and study celestial bodies like planets, stars, and galaxies. Both instruments rely on the principles of optics to enhance our ability to see and study things that are not visible to the naked eye.

How long was William Herschel's telescope?

William Herschel's famous 40-foot telescope (also known as the "Great Forty-Foot Telescope") was 40 feet long with a focal length of 40 feet as well. It was the largest telescope in the world at that time and was used by Herschel to make important astronomical discoveries.

What type of telescope is the famous telescope that orbits the earth?

The famous telescope that orbits the Earth is the Hubble Space Telescope, which is a space-based observatory launched by NASA in 1990. It observes in visible, ultraviolet, and near-infrared wavelengths and has provided significant contributions to our understanding of the universe.

Who was the telescope 1st invented by?

Galileo first invented what is recognized as the telescope.

What is the basic difference between the two types of optical telescopes?

Actually, there are at least three types. Refractor: A series of lenses, the classic "spy glass" style, carried to the extreme. Then there is the Reflector: Invented by Isaac Newton, uses a large mirror ground to a parabolic curve, and focused at the eyepiece. Lastly there is the various designs of catadioptric telescope, the most common being called the "Schmidt-Cassegrain". They use a series of different mirrors and an eyepiece to try and strike the balance between refractors (small field, large image, but dull and fuzzy), and reflectors (large field, small image, but sharp and clear). They give excellent results, but are far and away the most expensive type for the amateur. The mounting of a telescope is almost as important as the type. Simplest, most common, and least expensive is the alt-azimuth mount, but it has a half-dozen built-in frustrations. The equatorial mount is fussier to set up, requires more "homework" to use, but is much more satisfying in the long run.

What do you call the kind of telescope that the scientist use?

Scientists typically use optical telescopes to observe and study celestial objects and phenomena in the universe. These telescopes gather and focus light to create detailed images of distant objects, helping scientists to learn more about the universe.

Why the space junk stay in space?

When an object is in space, it is usually acted upon by some form of gravitational force from a large body of which keeps it some form of orbit. In addition to this, Newton's Laws pretty much state "things like to keep doing what they're doing". Space junk has no friction acting upon it to slow it's motion, so will continue to move in an orbital motion around some body in space, and not be pulled back down to say, Earth, because of balanced centripetal forces and whatnot. (Standard stop before the physics gets silly.)

Why is a probe better than a telescope?

A probe can physically visit celestial bodies to conduct scientific measurements and collect data up close, whereas a telescope can only observe objects from a distance. Probes can provide more detailed and direct information about planetary characteristics, such as composition, atmosphere, and surface features. Telescopes are more limited in their ability to gather detailed data compared to probes.

What is the biggest telescope in Hawaii called?

There are two very similar 10-meter telescopes at the W.M. Keck Observatory on Mauna Kea, on the Big Island of Hawaii.

Is hershelian a type of telescope?

Yes, a Hershelian telescope is a type of reflecting telescope in which the primary mirror is tilted so the observer's head does not block the incoming light.

At the end of the reflecting telescope is a what mirror?

At the end of the reflecting telescope is a primary mirror. This mirror collects and focuses light from distant objects before reflecting it to a smaller secondary mirror or camera for further magnification or analysis.

Why are large telescopes used to study distant galaxies and not small telescopes?

Large telescopes are used to study distant galaxies because they can gather more light, allowing for better resolution and the ability to detect fainter objects. Their larger size also grants them a greater light-gathering capacity, which is essential for observing objects that are billions of light-years away. Additionally, large telescopes offer higher sensitivity and better data collection capabilities, enabling astronomers to analyze and study distant galaxies in greater detail.

Can you study visible light using a radio telescope explain your answer?

No, a radio telescope is designed to detect radio waves, which have much longer wavelengths than visible light. Visible light cannot be studied using a radio telescope as it operates in a different part of the electromagnetic spectrum. To study visible light, astronomers typically use optical telescopes.

How did the galilean telescope works?

The Galilean telescope works by using a convex objective lens to collect light and focus it into a real, inverted image. This image is then magnified by a concave eyepiece lens to make it appear larger. The Galilean telescope produces a non-upright image due to its design.

Why isn't necessary for radio telescopes surface to be as smooth as mirrors?

The reflector of your telescope's mirror DOES need to be finely polished, with no disturbances bigger than a half-wavelength or so. So for optical telescopes, the mirror must be smooth to nanometers.

But for a radio telescope which measures wavelengths in meters or centimeters, a fine wire mesh will generally do the trick. And since radio telescopes tend to be very large, the finer the mesh the lighter the dish can be - and therefore, more easily rotated and pointed.

Can you see a supernova from earth without a telescope?

Yes, under the right conditions, a supernova can sometimes be visible from Earth without a telescope. However, most supernovae are too faint to see with the naked eye, so a telescope or binoculars are usually needed for observation.

How do I use a Galileo FS-102MOH 102mm Telescope?

well, the bottom mirror peice is supposed to reflect, so use the top open part by the eypeice to view objects, as the bottom of it is suppsoed to reflect like a mirror. so keep the bottom looking up as your eyepiece should be on the shaft toward the top

Can you take a telescope on a plane?

Yes, you can typically bring a telescope on a plane as carry-on or checked luggage. It's recommended to pack it securely and check with your airline for any specific guidelines or restrictions they may have for transporting such items.

Do telescopes use energy?

Yes. It takes energy to move them in the correct direction. In home telescopes, this is done by hand (energy from your muscles), in large telescopes they use some kind of motors to do that.