Why do optical astronomers often put their telescopes at the tops of mountains, while radio astronomers sometimes put their telescopes in deep valleys?
Q: 7. As seen from Earth, the two stars known as Krueger 60 have an angular separation of 2.5 arc…
A: Given- λ=550 nm=550×10-9 m
Q: Astronauts observing from a space station need a telescope with a resolving power of 0.9 arc seconds…
A:
Q: The Hubble Space Telescope has a primary mirror with diameter 2.4 m. Suppose you were able to point…
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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
Q: How does the resolving power of the 5-m telescope on Mount Palomar near San Diego compare with that…
A: The property of a telescope that enables it to capture small details of an object is called its…
Q: Why do nocturnal animals usually have large pupils in their eyes? How is that related to the way…
A: The eyes work by collecting light which stikes on photosensitive material and converts the light…
Q: When would an infrared telescope most likely be used?
A: An infrared telescope will detect and resolve the infrared rays. Since the wavelength of the…
Q: Astronauts observing from a space station need a telescope with a resolving power of 0.9 arc seconds…
A:
Q: Why would radio astronomers build identical radio telescopes in many different places around the…
A: Concept: Astronomers use radio telescopes to investigate areas of space. In astrophysics,…
Q: What if you had to scout for a site to build a new ground-based, optical telescope. What…
A: Introduction: From Galileo to Newton, now telescopes are made larger to study even far away objects.…
Q: Blue light has a wavelength of about 400 nm. Red light has a wavelength of about 700 nm. If both…
A: Given that: The wavelength of blue light is λBlue=400 nm The wavelength of red light is λRed=700 nm…
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: Why does the wavelength response of the human eye match the visual window of Earth's atmosphere so…
A: Most of the electromagnetic spectrum that reaches Earth is from the Sun. They are made of tiny…
Q: Optical and radiotelescopes are built on the ground but X-ray astronomy is possible only from…
A: Optical and radio telescopes are built on the ground but X-ray telescope are only build on satellite…
Q: Suppose one of the 10-m-diameter Keck Telescopes in Hawaii is trained in San Francisco, 3400 km…
A: Optical imaging is affected by the diffraction of light. When imaging small or distant objects there…
Q: What is the resolving power of an 8-inch telescope (if necessary, you may assume λ=550 nm)? By the…
A: Given: The wavelength of light is 550 nm. The diameter of the aperture of the telescope is 8 in. The…
Q: Assuming the angular resolution found for the HubbleTelescope , what is the smallest detail…
A: The expression for the resolving power is,
Q: How does the light-gathering power of a 300-m diameter radio telescope compare to that of a 50 m…
A: Given: Diameter of the light gathering power 1,D1=300mDiameter of the light gathering power…
Q: A laser beam of wavelength 633 nm is expanded to a diameter of 0.75 metres using a telescope, and…
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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: An astronomer wants to design an infrared telescope with an angular resolution of 1.5 arcseconds at…
A: The angular resolution (θ) of a telescope is given by the equation: θ = 1.22 × L / D where L is the…
Q: justify the expenditure of space telescopes . discuss their ability with gamma and x ray wavelengths…
A: A space telescope, also known as a space observatory, is a telescope that is placed in space and…
Q: Astronauts observing from a space station need a telescope with a resolving power of 0.6 arc second…
A: A telescope is an instrument which aids in the viewing of remote objects. Resolving power of an…
Q: How does human vision's peak in color sensitivity relate to the Sun? Why can't long-wavelength…
A: The Electromagnetic spectrum is given below: The wavelength is increasing from right to left of the…
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: How does the Rayleigh criterion influence the resolving power of optical instruments?
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- Astronauts observing from a space station need a telescope with a resolving power of 0.5 arc second at a wavelength of 570 nm and a magnifying power of 280. Design a telescope to meet their needs. (State the necessary primary diameter of the telescope, in m, and the ratio of the focal lengths below.)Compare the light-gathering power of one of the 10-m Keck telescopes with that of a 0.5-m telescope.You can see your lecturer in class (if you are there) because They emit visible light They reflect visible light O They emit infrared radiation O They reflect infrared radiation
- why is ultraviolet light (320 nm) more penetrating than a red light (700nm)Suppose you want a telescope that would allow you to see distinguishing features as small as 6.5 km on the Moon some 384,000 km away. Assume an average wavelength of 550 nm for the light received. What is the minimum diameter of the mirror (in centimeters) that you could use in the telescope?Why is it that radio telescopes need to be so larger or organized in arrays?
- If we want to discern whether two points of light close to each other appear distinct from one another, this refers to: Sensitivity O Color filters Angular size Angular resolution Image noiseSpy planes fly at extremely high altitudes (25 km) to avoidinterception. If their cameras are to discern features assmall as 5 cm, what is the minimum aperture of the cameralens to afford this resolution? (Use λ=580nm )