Telescopes

Most ultraviolet rays, x-rays, and even gamma rays are absorbed by the Earth's atmosphere, inhibiting the use of telescopes in these wavelength regimes from the ground or even at high altitudes. Therefore space telescopes are generally used to study light at these wavelengths. The telescopes can be in circular Earth-orbit or even further out at the Earth/Sun lagrangian points where the telescope can stay relatively still for high resolution images. Some examples include the Chandra x-ray observatory, the Compton gamma ray observatory, the hubble space telescope (visible, infrared, and UV instruments), and the Spitzer space telescope (infrared).

The average cost of an X-ray telescope can vary greatly depending on its size, complexity, and mission objectives. However, they typically range from tens of millions to hundreds of millions of dollars. For example, NASA's Chandra X-ray Observatory, launched in 1999, cost approximately $1.65 billion.

Increasing the size of the radio telescope greatly improves the angular resolution of radio maps. This is due to the relationship between the size of the telescope and the wavelengths of the radio waves being observed.

Yes. It's visible during the first couple of hours after sunset, and the first couple of hours before sunrise,
IF you know exactly when and where to look.

If you see it, it looks like a star moving quite slowly.

Take a look on < Heavens-Above.com > .

You put in your location, and the site tells you where and when several objects will be visible from your location.

Zacharias Jansen is believed to have received his education in the Netherlands. However, there is limited historical evidence available on his educational background.

Yes, Polaris is very close to being at the celestial pole, which is approximately plus 90 degrees declination in the sky. It is used as a navigational aid for celestial navigation and is a good guide for finding true north in the Northern Hemisphere.

The telescope was first invented in the Netherlands in the early 1600s, with Hans Lippershey often credited as the original inventor. However, there were also claims from other inventors like Zacharias Janssen and Jacob Metius around the same time. The telescope played a pivotal role in advancing astronomy and our understanding of the universe.

according to me both are equally important. in science, smallest of the things hold a great importance. space science has always fasinated man and thus telescope is a wonderful discovery till today because scientists get to know more and more about this unknown world. microscopes are of great importance too, because we get to see the structures too small to be seen through naked eyes and we get to know about the complexity of our own body structure. so both are at equal post and both are equally important.

One is The Southern Cross "Crux" which is the smallest of the constellations.

people want to know the unknown things in the space like coloumbus's

exploration through the sea. they want to know about the aliens, who are belived to be living in some other planets,as our human behaviour is, featuring to know about the neighbours,and to the facilities and wealth of them ,this same feature made them to explore space.

Humankind has always been fascinated by what is beyond our world, but the satisfaction of this curiosity was only feasible when our technology was sufficiently advanced breach the hold of gravity, circa 1960. The deciding factor in this realization of said curiosity was the Cold War funding pumped into space programs by the United States and the Soviet Union in what was ultimately a pissing match between the two to prove who was superior.

The Submillimeter Array (SMA) is a radio interferometer located atop Maunakea in Hawaii. It consists of eight radio dishes that work together to observe celestial objects at submillimeter wavelengths. The SMA is used for studying a wide range of astronomical phenomena such as star formation, planet formation, and the chemical composition of interstellar space.

All you have to do is press the X button on the top right corner.

Yes, you can see the moon with a 30x telescope. A telescope with 30x magnification is powerful enough to offer a detailed view of the moon, allowing you to observe its craters, mountains, and other features. Just be sure to wait for a clear night with minimal light pollution for the best viewing experience.

Galileo Gailei is the first person credited with using the telescope for astronomical observations. He did not invent the telescope. He is the first to have seen moons going around Jupiter, the rings of Saturn (though he incorrectly identified them), and that the Moon had cliffs and craters.

Isaac Newton invented it, as he understood from his study of optics that a large lens, or mirro, gathered more light than a small one, and the objective lens of the best telescopes of the time rarely exceeded about 30mm (inch and a quarter). The principal worked, allowing him to see many more celestial bodies than the telescopes of the time, though usually with a smaller image, overall.

It depends on what you mean by teleportation. If your teleportation happens at the speed of light, then no. When you got there and looked back, you'd see what happened right after you left. If the teleportation was "instantaneous" (assuming that Earth and Point X are stationary relative to each other, an observer midway between would say that your disappearance on Earth and appearance on X were simultaneous), then yes, you'd see events on Earth that happened prior to your teleportation. How much prior depends on how far you went. Of course, you might see magic fairy unicorns, since our current understanding of relativity says those are just as real as instantaneous teleportation.

No. In fact, using a telescope would almost guarantee that you would not see any meteors. Here's why.

Telescopes magnify a small area of the sky; the more powerful the telescope, the smaller the area. Telescopes are great for getting a close-up view of things that aren't moving too quickly; even then, with a big scope, you'll be re-centering it often as the Earth turns and the star/planet/comet/whatever drifts out of view.

Meteors can appear anywhere in the sky. They come VAGUELY from the constellation Perseus (for the Perseid meteors) or from other constellations that lend their names to the specific shower. Perseids enter the Earth's atmosphere at 130,000 miles per hour; they cross the sky in a second and either burn out or explode. There is NO WAY for you to see the incoming meteor, point the scope at it, and center; it's already gone. And since you don't know where the next meteor will appear, it would be like playing the lottery to point your telescope at a spot in the sky and just HOPE that you get lucky.

In a strong meteor shower, you might see a dozen in a minute, sometimes three or four together. Keep your head buried in a telescope, and I'll offer you a wager that you'll miss the best parts of the show.

Telescopes are great. But not for meteor showers.

Still determined to use your telescope during a meteor shower? Point it at the Moon! The Moon isn't THAT far away from Earth; the Moon is in the same meteor shower that the Earth is. Astronomers studying the Moon have watched hundreds of meteor strikes on the Moon over just the last year or so. Little meteors that make a nice light show in the sky aren't big enough to punch the Moon very hard, but there are those millions of millions of craters on the Moon, and each one was caused by a BIG impactor. There's chance - a SLIM chance - that you could see the explosion of a lunar impact.

Naked eye on the sky, or use your telescope on the Moon; either way, good hunting!

= Topic 1 Lenses and Refracting Telescopes = In the exam you are expected to know about: * Principal focus, focal length of converging lens * power = 1/f * Formation of images by a converging lens * Ray diagrams * Lens formula: 1/f = 1/u + 1/v * Astronomical telescope consisting of two converging lenses * Ray diagram to show the image formation in normal adjustment * Angular magnification in normal adjustment * M = angle subtended by image at eyeangle subtended by object at unaided eye * Focal lengths of the lenses * M = fo/fe * *: Refractors were the earliest type of optical telescope. The first practical refracting telescopes appeared in the Netherlands in about 1608, and were credited to three individuals, Hans Lippershey and Zacharias Janssen, spectacle-makers in Middelburg, and Jacob Metius of Alkmaar also known as Jacob Adriaanszoon. Galileo, happening to be in Venice in about the month of May 1609, heard of the invention and constructed a much improved version of his own based on his understanding of the effects of refraction. Galileo then communicated the details of his invention to the public, and presented the instrument itself to the Doge Leonardo Donato, sitting in full council. Galileo may thus claim to have invented the refracting telescope independently, but not until he had heard that others had done so

The moon is about 0.0000000406 light years away from earth.

Clearly, the moon is MUCH too close (238,000 or 239,000 miles or so) for the distance to be rendered meaningfully in light years.

I'm not aware of any telescopes that begin with the letter "Hub." Telescopes often have names like Hubble, which is named after astronomer Edwin Hubble, or Hubbell, which may be a variation or misspelling of the Hubble Space Telescope.

a refractor or a reflector are two types of telescope.

LOMO Optics refers to lenses and mirrors produced by the LOMO company in Russia. In telescopes, LOMO Optics are known for their high-quality construction and precision, offering clear and sharp images of celestial objects. Telescopes equipped with LOMO Optics are popular among amateur astronomers for their performance and affordability.

Careers that use telescopes include astronomers, astrophysicists, planetary scientists, and aerospace engineers. Telescopes are essential tools for observing and studying celestial objects in space, such as stars, planets, and galaxies.