What if you had to scout for a site to build a new ground-based, optical telescope. What characteristics would an excellent site possess? Name at least two.
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Q: Calculate the resolution (in radians) for a telescope with the following diameter (assume it is…
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Q: Compared to a 0.2 m diameter telescope, a 0.4 m diameter telescope has how much more light gathering…
A: The diameter of telescope 1: d1 = 0.2 m The diameter of telescope 2: d2 = 0.4 m
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A: Given Data : Telescope To Find : Fill the characteristics of telescope in the blanks.
Q: Why can't we see stars in day time?
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Q: Astronauts observing from a space station need a telescope with a resolving power of 0.9 arc seconds…
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Q: How much larger than a 1-m telescope would another telescope have to be in order to have 1000 times…
A: The light-gathering power of a telescope is defined as the amount of light it can gather and then…
Q: Let’s say that we have a radio dish that is 22 meters in diameter. It is designed to detect radio…
A: The diameter of the dish is 22 m. The wavelength of the radio wave is 0.00006 cm.
Q: Why must most infrared telescopes operate at very high altitudes or in space?
A: We are well aware most of the objects near the earth's surface and even the atmosphere absorb and…
Q: When astronomers discuss the apertures of their telescopes, they say bigger is better. Explain why.…
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Q: Suppose astronomers built a 90-meter telescope. How much greater would it's light collecting area be…
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Q: What is the idea behind the method of images? What does it accomplish? When is it most useful? What…
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Q: How much more light can a telescope with a 14-inch diameter mirror gather compared with a 4-inch…
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Q: Why do optical astronomers often put their telescopes at the tops of mountains, while radio…
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Q: In a cassegrain telescope, where does the light go after it passes through the aperture?
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Q: How many more times can keck telescope 10 m in diameter gather rather than a an amateur telescope…
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Q: How much better light-gathering-power does a professional telescope with a diameter of 4 meters have…
A: Light gathering power of a telescope is directly proportional to the diameter of the aperture P∝D…
Q: two reflecting telescopes have the same angular resolution, but one of them uses visible light and…
A: The formula for angular resolution is, θ=1.22λD (1) Where λ and D are the wavelength of light and…
Q: The largest telescopes in the world are used to detect: a)x-ray. b)radio wave. c)visible light.…
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Q: What is the theoretical angular resolution of observations with the eye? Assume the wavelength is…
A: The angular resolution of a lens with diameter D for light with wavelength λ, is given by λD.
Q: Why are x-ray telescopes all in space, rather than on the Earth?
A: X-ray telescopes are used to detect objects in X rays spectrum in outer space.
Q: The light-gathering power of a telescope is directly related to the area of the telescope's primary…
A: Given: The light gathering power of a telescope is directly proportional to the area of the primary…
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What if you had to scout for a site to build a new ground-based, optical telescope. What characteristics would an excellent site possess? Name at least two.
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- Astronauts observing from a space station need a telescope with a resolving power of 0.6 arc second at a wavelength of 530 nm and a magnifying power of 220. Design a telescope to meet their needs.What will its light-gathering power be, compared with a dark-adapted human eye? (Assume that the pupil of your eye can open to a diameter of about 0.8 cm in dark conditions.)(State the necessary primary diameter of the telescope, in m, and the ratio of the focal lengths below.)(1) 6. (5) The Hubble Space Telescope orbits the Earth every 95 minutes, taking breathtaking images of our universe. Calculate its altitude above the Earth's Surface. Fc N 47₁1² T2 r ? 11 G GM = 3√T²2GM G₂Geostationary satellites cannot be seen in a telescope from Albany because they are always directly over the Equator. True False
- For a human eye with a pupil diameter (aperture diameter D) of 0.005 meters, and a focal length of 0.022 meters, there will be a resolution limit due to diffraction at 0.6 microns (10^-6 meters) wavelength. If we space light-sensitive cells on the retina at this spacing, how many retina cells per meter (of retina) are there? cells/meter. Now suppose there are giants which are exactly twice the size of humans in each dimension. So giant eyes have pupils of 0.01 meters, and a focal length of 0.044 meters. How many retina cells per meter should the giants have? cells/meterThe earliest used telescopes by astronomers were?Compare the light-gathering power of a 10 m Keck telescope with that of a 0.9 m telescope.