i need the answer quickly Topic : opticsProblem 87.Can a terrestrial telescope be used forobserving astronomical objects?Explain in 20-30 words .||

Answer:- Yes a terrestrial telescope be used for observing astronomical telescope. Because…

Answered: Can a terrestrial telescope be used for…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter18: Refraction And Lenses

Section: Chapter Questions

Problem 71A

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Similar questions

How far apart must two objects be on the moon to be resolvable by the 8.1-m-diameter Gemini North telescope at Mauna Kea, Hawaii, if only the diffraction effects of the telescope aperture limit the resolution? Assume 550 nm for the wavelength of light and 400,000 km for the distance to the moon.
If you build a telescope with a focal length of 1.3 m, what focal length does the eyepiece need to give a magnification of 100 times?
What is the minimum angular separation of two stars that are just-resolvable by the 8.1-m Gemini South telescope, if atmospheric effects do not limit resolution? Use 550 nm for the wavelength of the light from the stars.
Telescopes can now be operated remotely from a warm room, but until about 25 years ago, astronomers worked at the telescope to guide it so that it remained pointed in exactly the right place. In a large telescope, like the Palomar 200-inch telescope, astronomers sat in a cage at the top of the telescope, where the secondary mirror is located, as shown in Figure 6.6. Assume for the purpose of your calculation that the diameter of this cage was 40 inches. What fraction of the light is blocked? Figure 6.6 Focus Arrangements for Reflecting Telescopes. Reflecting telescopes have different options for where the light is brought to a focus. With prime focus, light is detected where it comes to a focus after reflecting from the primary mirror. With Newtonian focus, light is reflected by a small secondary mirror off to one side, where it can be detected (see also Figure 6.5). Most large professional telescopes have a Cassegrain focus in which light is reflected by the secondary mirror down through a hole in the primary mirror to an observing station below the telescope.
People are often bothered when they discover that reflecting telescopes have a second mirror in the middle to bring the light out to an accessible focus where big instruments can be mounted. “Don’t you lose light?” people ask. Well, yes, you do, but there is no better alternative. You can estimate how much light is lost by such an arrangement. The primary mirror (the one at the bottom in Figure 6.6) of the Gemini North telescope is 8 m in diameter. The secondary mirror at the top is about 1 m in diameter. Use the formula for the area of a circle to estimate what fraction of the light is blocked by the secondary mirror. Figure 6.6 Focus Arrangements for Reflecting Telescopes. Reflecting telescopes have different options for where the light is brought to a focus. With prime focus, light is detected where it comes to a focus after reflecting from the primary mirror. With Newtonian focus, light is reflected by a small secondary mirror off to one side, where it can be detected (see also Figure 6.5). Most large professional telescopes have a Cassegrain focus in which light is reflected by the secondary mirror down through a hole in the primary mirror to an observing station below the telescope.
What is the minimum diameter mirror on a telescope that would allow you to see details as small as 5.00 km on the moon some 384,000 km away? Assume an average wavelength of 550 nm for the light received.
How much do binoculars help astronomical observations? Have you ever used binoculars for astronomy or anything else? Also why do many people say binoculars better to start with for astronomical observing versus a telescope?
Astronauts observing from a space station need a telescope with a resolving power of 0.4 arc second at a wavelength of 530 nm and a magnifying power of 300. 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.) Dtelescope= m Feyepiece Fprimary = 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.) LGPtelescope LGPeye =
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.)
Astronomers often use large mirrors in their telescopes togather as much light as possible from faint distant objects. Shouldthe mirror in their telescopes be concave or convex? Explain
Your new telescope comes with an objective lens of focal length fo = 990 mm and an eyepiece with a focal length of fe = 15.7 mm. What is the absolute value of its magnification? (Ignore the - sign.)
The primary mirror on a telescope is able to resolve objects that are theta o apart. If you replace the mirror with one that has it in diameter six times smaller than the first what will be the angular resolution of the telescope

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Can a terrestrial telescope be used for observing astronomical objects? Explain in 20-30 words.