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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
What does the prefix tele mean in telescope?
The prefix "tele" in telescope comes from the Greek word "téle," which means far off or distant. In the context of telescope, it suggests that the device is used for viewing distant objects, such as stars and planets.
Is a bird looking at a mirror an example of light being refracted?
No, a bird looking at a mirror is an example of light being reflected, not refracted. When light hits the mirror, it bounces off in a different direction but does not change mediums. Refraction is when light passes through different mediums and changes direction.
What year did Aristotle invent the telescope?
Aristotle did not invent the telescope; he lived roughly 2000 years before the telescope was invented.
What is at coordinates 15h13m58.55s and 0 11 03.98 arc degrees in Google sky?
? Beats me. My star chart is pretty empty at 15h13m58.55s and 0 11 03.98 arc degrees, at least out to magnitude 6.35. Most likely they may be exhibiting a deep sky thingie from the Hubble.
On the name of which Indian scientist NASA put the name of X-Ray telescope?
NASA named its X-ray telescope after Indian astrophysicist Subrahmanyan Chandrasekhar, in recognition of his groundbreaking work on the evolution and structure of stars. The Chandra X-ray Observatory was launched in 1999 and continues to provide valuable insights into the high-energy universe.
What does EQ means on a telescope lens?
"EQ" on a telescope lens typically refers to the type of mount the telescope sits on. EQ stands for equatorial mount, which is a type of mount that can be aligned with the Earth's axis to track celestial objects as they move across the sky.
Which telescope is designed with mirrors along the inside of it's body tube?
A Cassegrain telescope is designed with mirrors along the inside of its body tube. Light enters the tube and first reflects off a concave primary mirror at the back of the tube, then reflects off a smaller convex secondary mirror before exiting the tube. This design allows for a more compact telescope with a long focal length.
Explain two reasons for sending telescopes into space?
Astronomers have several reasons to send telescopes into space, including:
* The atmosphere makes stars look blurry. the simple answer is the atmosphere. The layers of air in the atmosphere may seem clear but contribute to a fuzzy picture in space. To avoid this they send telescopes into space where nothing is in between the telescope and the observed object.
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.
* The atmosphere completely blocks some kinds of light -- in particular, ultraviolet and far-infrared light. On earth, spectrometers using this kind of light tell us a lot about local materials. To get the same information about stars and planets, we need to put the spectrometer outside the veil of the atmosphere.
People who are not astronomers have other reasons to send telescopes into space, including
* Telescopes on "weather satellites" and "spy satellites" pointed at earth can get photos and accurate maps of places and weather that are extremely difficult to get in any other way.
Galileo used to telescope to map out the stars. To be honest, the telescope was very important because he noticed that Jupiter actually had moons... this got Galileo into trouble because it proved that the earth wasn't the center of the universe (went against the church)...... he studied the crescents on Venus and such. It provided him a scientific tool to go beyond the normal humans eye sight. If you want to know more im sure wiki has plenty of pages on Galilo. :)
*sources
None this time... did this from my memory. :)
What discoveries were made by the reflecting telescope?
The reflecting telescope, invented by Sir Isaac Newton, allowed for sharper and brighter images of celestial objects compared to the refracting telescope. This telescope played a crucial role in advancements in astronomy and led to discoveries such as the rings of Saturn, the moons of Jupiter, and the spiral structure of galaxies.
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.
How far away will the James Webb telescope be from Earth?
The James Webb Space Telescope will be located approximately 1.5 million kilometers (about 932,000 miles) away from Earth at the second Lagrange point (L2), which is a stable gravitational point in space.
What does a telescope gather from objects in space?
A telescope gathers light from objects in space, allowing astronomers to observe and study the objects in detail. This collected light is then magnified and analyzed to provide information on the object's characteristics such as size, composition, distance, and movement.
How are telescopes used to assist astronomers?
Telescopes are used by astronomers to collect light from celestial objects such as stars, planets, and galaxies. They enable astronomers to study these objects in detail, revealing information about their properties, composition, and motion. Telescopes can also help astronomers in detecting and studying phenomena like supernovae, black holes, and exoplanets.
Why do you need space boots in space?
Space boots are necessary in space to protect astronauts from extreme temperature changes, provide traction in microgravity environments, and shield them from sharp objects or debris that could pose a hazard. They also help regulate blood flow and reduce the risk of injury during spacewalks and other extravehicular activities.
What are some names of unmanned missions?
Some names of unmanned missions include Voyager, Curiosity, Juno, and Hubble. These missions have explored distant planets, comets, asteroids, and galaxies, providing valuable information about the universe.
What is the overhyped feature of telescope sales?
The magnification. What really matters about a telescope, the single most important piece of information, is the diameter of the main lens, or main mirror.
The magnification. What really matters about a telescope, the single most important piece of information, is the diameter of the main lens, or main mirror.
The magnification. What really matters about a telescope, the single most important piece of information, is the diameter of the main lens, or main mirror.
The magnification. What really matters about a telescope, the single most important piece of information, is the diameter of the main lens, or main mirror.
The largest visible light telescopes are now all what?
The largest visible light telescopes are now all ground-based, such as the Keck Observatory in Hawaii or the Very Large Telescope in Chile. These telescopes provide high-resolution images and data of celestial objects in visible light.
If pole star doesnt move then how can you see pole star during revolution of earth?
The Pole Star appears stationary in the night sky because it lies almost directly above the Earth's North Pole. As the Earth rotates on its axis, the North Pole always points in the same direction towards the Pole Star. This makes the Pole Star visible every night, regardless of the Earth's revolution around the Sun.
Radio telescopes are used by astronomers to study celestial objects and phenomena in the radio frequency range. They are employed to detect radio waves emitted by objects such as stars, galaxies, and cosmic microwave background radiation. Radio telescopes are also used in radio astronomy research to investigate the structure and composition of the universe.
Why are most large telescopes reflecting telescopes?
They are refracting telescopes(:
Large refracting telescopes are no longer built because there were too many problems with them. There was color distortion, light pollution, and when the object hits the focal point it turns upside down. Then you don't see the object for what it really is, you see it upside down and weird-ed out. They are to complicated and scientists believed they should just stick with the simple, small, original refracting telescopes!!!!
-Meghan Betts (8th grader)
How many mirrors does a reflecting telescope have?
A reflecting telescope only needs one mirror, the primary mirror which will focus incoming light to a single point.
A digital telescope might place the digital recording media directly in front of the reflecting telescope without any additional mirrors (although perhaps some lenses).
For practical purposes though, most optical telescope will have a secondary mirror that will either focus light straight back through a hole in the primary telescope mirror, or to the side of the telescope.
Some telescopes, especially the large ones in observatories will have several mirrors directing the light path to the observer or recording equipment.
The light-gathering power of an objective lens or mirror is proportional to its area, or equivalently,
to the square of its linear dimensions (radius, diameter, circumference).
If the focal ratios ('f' number) are the same, then the 1-m scope scoops up 102 = 100 times as much light
as the 10-cm job.
100 times difference in brightness is exactly the mathematical definition of six (6) magnitudes brighter/dimmer.
Strange obsession with telescopes and studying the night sky?
It sounds like you have a passion for astronomy, which can be a fulfilling hobby or even a potential career path. Studying the night sky with telescopes allows for exploring the vast universe beyond our planet and can lead to discovering new celestial objects and phenomena. Consider joining an astronomy club or pursuing formal education in astronomy to further enhance your interest and knowledge in this field.
