Why Do Radio Telescopes Have Such Poor Resolution? Radio telescopes consist of very large dishes constructed of metal plates which focus the radio waves to a point above the centre of the dish where the receiver is located. Radio telescopes have to be very large because the long wavelengths of the EM radiation result in
Why Are There Limitations To Using Telescopes On Earth? Because of the protective effect of the atmosphere, ground-based telescopes can’t pick up the lethal, invisible portions of the electromagnetic spectrum such as ultraviolet rays, x-rays and gamma rays. These parts of the spectrum help astronomers extract better pictures of stars and other space phenomena. Do
Why Do Space Telescopes Make Clearer Pictures Than Earth Telescopes? Space telescopes have the advantage of being above the blurring effects of the Earth’s atmosphere. In addition, there are many wavelengths from the electromagnetic spectrum that do not reach Earth because they are absorbed or reflected by the Earth’s atmosphere. Why do telescopes that are
Can Anyone Use The Hubble Space Telescope? In contrast with other space telescopes, the Hubble is open for public use if in accordance with their rules and regulations for usage. Each year more than 1,000 proposals are reviewed, and approximately 200 are selected. You would need to make contact with the Goddard Space Flight Center
Which Is Better Reflecting Or Refracting Telescope? Each telescope has its own advantage, for instance the refractor is better for observing the planets and the moon and the reflector for deep-sky objects (e.g. galaxies). However, the refractor suffers from what is known as chromatic aberration. Do astronomers prefer reflecting or refracting telescopes? Astronomers prefer reflecting
Why Does The Hubble Telescope Get Such Clear Images? Hubble’s CCD cameras don’t measure the color of the incoming light directly. But the telescope does have various filters that can be applied to let in only a specific wavelength range, or color, of light. … It takes a telescope, letting light build up in its
Are Reflecting Telescopes Better Than Refracting? Reflecting telescopes have many advantages over refracting telescopes. Mirrors don’t cause chromatic aberration and they are easier and cheaper to build large. The are also easier to mount because the back of the mirror can be used to attach to the mount. Which is better reflecting or refracting telescope?
What Types Of Telescopes Have To Be Placed In Space? X-ray and gamma-ray telescopes study the hottest and most explosive objects in space. Infrared telescopes study the places where stars are born and can look into the centers of galaxies. Optical telescopes study the visible light from space and ultraviolet telescopes study very hot stars.
What Did Galileo Contribute To Astronomy? Galileo sparked the birth of modern astronomy with his observations of the Moon, phases of Venus, moons around Jupiter, sunspots, and the news that seemingly countless individual stars make up the Milky Way Galaxy. Why is Galileo important to astronomy? Galileo pioneered the use of the telescope for observing
Why Do Astronomers Study Light? Visible light — the light you see with your eyes — reveals only part of the universe. Astronomers observe many other types of “light” to expand our views of the universe. How do astronomers use light? “You take the light from a star, planet or galaxy and pass it through