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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 does a telescope in orbit gives clear pictures?
Telescopes in orbit are not affected by atmospheric turbulence, which can distort images taken by ground-based telescopes. This allows for clearer and sharper images to be captured by telescopes in orbit. Additionally, being above the Earth's atmosphere reduces the amount of light pollution and interference, further improving image quality.
Because that's how long it has taken the light from those galaxies to reach us.
You don't 'see' something until the light from it reaches you. If the thing is on the moon,
it takes about 1.27 seconds. It it's on the sun, it takes about 81/3 minutes.
If it's on the nearest star outside our solar system, it takes about 4.2 years. If it's
in the nearest galaxy outside of ours, it takes about 2.5 million years. And if it's in
the farthest galaxy that our present technology is able to detect, it takes about
14 billion years.
To get here at the speed of light.
Here's another way to start understanding it. You get a letter in the mail from
an old friend. In the letter, he writes "Today we had a terrible storm here. The
wind was howling, the thunder and lightning went on for hours, trees were blowing
by in the sky, and by the time it was over, we had almost 30 inches of rain."
When did the storm happen ? When you opened the envelope, took out the paper,
and read the letter, it said "Today". But you know very well that the storm didn't
happen "today" because it took some time for the letter to reach you.
And that's the whole idea. Light takes time to move from place to place. It's
awesomely fast ... like 7 or 8 times around the Earth in one second ... but it does
take time to cover a distance. You can never see anything at exactly the same
time as it happens. You have to wait until the light from it reaches you.
Who was the first astronaut to see mars with a telescope?
The first astronaut to see Mars through a telescope was most likely one of the Apollo astronauts who orbited the moon in the late 1960s and early 1970s. These astronauts had training in celestial navigation and would have had access to telescopes for observation during their missions. However, I could not find specific information on which astronaut was the very first to view Mars through a telescope while in space.
Can you attach a Nikon P900 to a telescope to get more optical zoom?
Although I'm not familiar with the Nikon P900 system, adding a camera to a telescope is usually an enhancement. The only downside would be if you are trying to exceed the usable magnification of the overall system. Despite manufacturers claims of high magnification (for sales purposes), no telescope is much good above 100 power, and excellent images are usually achieved around 60x. High magnification means magnifying the atmospheric and optical defects as well as the image you want.
Can a telescope have 3 lenses?
Yes. Apochromatic refractors often use 3 lenses in order to focus all visible wavelengths of light at a single point to minimize or eliminate chromatic aberration.
OJ 287 was discovered in 1968 as a radio source by the Ohio State University Radio Telescope. It was later recognized as an active variable source in radio and optical bands in the early 1970's.
What does the suns heat and light come from?
the suns heat light and energy comes from the core of the sun and travels trough space
As a youngster, Edwin Hubble loved reading books by Jules Verne, especially 20,000 Leagues Under the Sea. This author had a significant impact on Hubble's life.
He was offered a position at the Mount Wilson Observatory by George Ellery Hale but had to defer this appointment till after WW1. So Hale would have had an influence on Hubble.
But as to his inspiration in astronomy and cosmology, I can find no record of a mentor. He broke new ground so would have been a mentor to many and his work even influenced Einstein.
What discovery did the optical telescopes make?
the optical telescope has discovered objects on earth and in space
Do larger lens of a telescope brings more lgp?
Most definitely yes (assuming lgp means light gathering power)
What are the advantages of using the naked eye compared to using a telescope?
The naked eye is more portable, can be transported easily to remote locations,
can be set up and ready for operation in less time than a telescope can, and it
requires much less peripheral equipment and accessories to follow the motion
of objects under observation, especially when the motions are unpredictable.
How did people start believing in the Heliocentric Model?
They started seeing Venus through the telescope
What is focal length of a door peephole's lens and is it concave or convex?
The lens in a door peephole is a convex lens with a very short
focal length, giving it a wide field of view. If it were on a camera,
it would be called a "Fisheye lens".
Light can travel about 6 trillion miles in a year, so that distance is called a light-year.
Why are optical telecopes placed as high as possible?
so that it will not fall down on earth :) and hit someones head! hope it helped
How do you find the amount of miles in a light year?
The speed of light is about 186,000 miles per second
There are 60 seconds in a minutes and 60 minutes in an hour. 24 hours in a day, and 365.25 days in a year.
So 186,000 x 60 x 60 x 24 x 365.25 gives 5,869,552,896,000 miles
Which is close enough to the official light year of 5,878,625,373,183.608 miles
How do mirrors and lenses compare in their interaction with light?
Mirrors reflect light; lenses do not. APEX
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What kind of telescope is shown in the diagram?
As no diagram is given, it is not possible to answer your question.
Was the telescope invented in the 19 century?
No, the first practical telescope was invented at the beginning of the 17th century.
