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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 can only international telescopes operate in space?
That is not the case. While countries may share the cost of launching a telescope into space (and share the time on it), individual countries have launched their own telescopes - eg Hubble is not international, it belongs to NASA/US.
Which region of the early universe was most likely to become a galaxy?
B! A region whose matter density was higher than average
What year did Galileo Galilei invent the first telescope?
Galileo Galilei did not invent the first telescope; it was invented by Dutch eyeglass maker Hans Lippershey in 1608. Galileo, however, heard about this invention and created his own improved version in 1609, which he used to make groundbreaking astronomical observations.
How do you get the wrench to fix the telescope?
You always have it with you. The wrench is located on your spy phone.
Galaxies are moving away from each
other in a constantly expanding universe
What is the difference between a refracting telescope and a?
A refracting or refractor telescope is a dioptric telescope that uses a lens as its objective to form an image. The refracting telescope design was originally used in spy glasses and astronomical telescopes but is also used in other devices such as binoculars and long or telephoto camera lenses.
There are two basic types of telescopes, refractors and reflectors. The part of the telescope that gathers the light, called the objective, determines the type of telescope. A refractor telescope uses a glass lens as its objective. The glass lens is at the front of the telescope and light is bent (refracted) as it passes through the lens. A reflectortelescope uses a mirror as its objective. The mirror is close to the rear of the telescope and light is bounced off (reflected) as it strikes the mirror
Which country will be setting up a world biggest telescope?
The world's largest telescope, the Square Kilometre Array (SKA), will be set up across Australia and South Africa. The project is an international collaboration involving several countries.
Is a sextant a type of telescope or is it a compass la teen or astrolabe?
A sextant would be a type of astrolabe. It has a sighting mechanism that is a small telescope. It does not have a compass in it.
Who was the first person to see mercury with a telescope?
The first person to see Mercury with a telescope is believed to be Galileo Galilei in the early 17th century. He observed the phases of Mercury, similar to those of the Moon, which supported the heliocentric model of the solar system.
Why do scientists use telescopes?
Telescopes collect electromagnetic radiation. This radiation may be at wavelengths that the human eye can not see thereby giving us images of the universe that would otherwise be invisible to us. With visible radiation the telescope gathers more light than can pass naturally through the pupil of the human eye and therefore concentrates the light allowing us to see fainter objects or to magnify and resolve features on distant objects. A telescope can also be used as a platform on which to attach other scientific instruments (such as spectrometers) allowing scientists to analyse the information about distant objects contained in the light from those objects.
How have radio telescopes help astronomy research?
optical astronomy uses a telescope with light collecring capability to see futher object like galixes and other types of nebula,variable star,clusters.Radio astronomy uses radio waves to find a object radio telescopes are mainly used to look at pulsars and radio emmiting objects.optical telescopes like speace telescope hubble can see back as far as the big bang that's around 13.7 billion years ago
What portion of the electromagnetic spectrum do radio telescope use?
The radio frequency portion of the electromagnetic spectrum uses radio telescopes.
How does the Hubble space telescope move?
The HST orbits at 559 km above Earth but it is subject to Earth's drag, pulling it gradually down. In order to counter this effect the HST has fuel and rockets that are used for correcting the orbit and also raise it in altitude. However, the effect of that drag on the 10-ton instrument (when weighed on Earth) is much less than on the 450-ton ISS at 400 km (where the drag is 70 to 100 m within 24 hours).
Why were astronomers amazed at the clockwise turning galaxy revealed by Hubble?
Astronomers were amazed by the clockwise turning galaxy revealed by Hubble because it challenged existing models of galaxy formation and dynamics, which typically expected galaxies to rotate in a counterclockwise direction due to the predominant angular momentum in the universe. This discovery suggested that there could be more complex interactions at play, such as gravitational influences or mergers with other galaxies. Additionally, finding a galaxy that deviated from the norm raised intriguing questions about the diversity of galaxy evolution and the underlying physics governing their rotation.
What telescope helped us see the interior of the nebula?
The Hubble Space Telescope has been instrumental in helping us observe the interior of nebulae. Its advanced imaging capabilities and sensitivity to various wavelengths of light allow astronomers to study the intricate structures and processes occurring within these cosmic clouds. Additionally, the Atacama Large Millimeter/submillimeter Array (ALMA) has provided detailed observations of the molecular gas within nebulae, enhancing our understanding of their formation and evolution. Together, these telescopes have greatly expanded our knowledge of nebular interiors.
What of the three properties in optical telescopes is most important?
The most important property of optical telescopes is their aperture size, which determines the amount of light the telescope can collect. A larger aperture allows for better resolution and the ability to detect fainter objects, ultimately enhancing the telescope's ability to observe distant celestial phenomena. While other properties like focal length and optical design are also significant, the aperture is crucial for overall performance and image clarity.
