Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 6, Problem 11Q
To determine
To explain: A reflecting telescope with the help of a diagram and also mention about the four different ways in which an astronomer can access the focal plane.
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Define magnifying power of a telescope. Write its expression.A small telescope has an objective lens of focal length 150cm and an eye piece of focal length 5cm. If this telescope is used to view a 100m high tower 3km away, find the height of the final image when it is formed 25cm away from the eye piece.
What is the magnification of an astronomical telescope whose objective lens has a focal length of 78 cm and whose eyepiece has a focal length of 2.8 cm? The telescope is set so the image of the eyepiece is at infinity (so the viewer’s eye is “relaxed”). What is the overall length of the telescope?
Sketch the situation, defining all your variables
Please sketch it, this is most important.
Formula:D = 1/F
*1 – meter; 40 – inches; 100 – centimeters; 1,000 – millimeters
DON'T ANSWER A, B, AND C. ANSWER 1, 2, 3, AND 4
a. What is the power of a lens with 16cm focal length? (DO NOT ANSWER)b. In performing Retinoscopy, the working distance is 20 inches. What is the working distance lens? (DO NOT ANSWER)c. What is the focal length of a +2.00D? (In inches and in cm) (DO NOT ANSWER)
Also answer this
Computation: (ANSWER 1, 2, 3 AND 4 BELOW AND NOT THE QUESTIONS ABOVE)1. 13 inches 2. 50 cm 3. +2.50D4. +1.25D
Chapter 6 Solutions
Universe
Ch. 6 - Prob. 1CCCh. 6 - Prob. 2CCCh. 6 - Prob. 3CCCh. 6 - Prob. 4CCCh. 6 - Prob. 5CCCh. 6 - Prob. 6CCCh. 6 - Prob. 7CCCh. 6 - Prob. 8CCCh. 6 - Prob. 9CCCh. 6 - Prob. 10CC
Ch. 6 - Prob. 11CCCh. 6 - Prob. 1QCh. 6 - Prob. 2QCh. 6 - Prob. 3QCh. 6 - Prob. 4QCh. 6 - Prob. 5QCh. 6 - Prob. 6QCh. 6 - Prob. 7QCh. 6 - Prob. 8QCh. 6 - Prob. 9QCh. 6 - Prob. 10QCh. 6 - Prob. 11QCh. 6 - Prob. 12QCh. 6 - Prob. 13QCh. 6 - Prob. 14QCh. 6 - Prob. 15QCh. 6 - Prob. 16QCh. 6 - Prob. 17QCh. 6 - Prob. 18QCh. 6 - Prob. 19QCh. 6 - Prob. 20QCh. 6 - Prob. 21QCh. 6 - Prob. 22QCh. 6 - Prob. 23QCh. 6 - Prob. 24QCh. 6 - Prob. 25QCh. 6 - Prob. 26QCh. 6 - Prob. 27QCh. 6 - Prob. 28QCh. 6 - Prob. 29QCh. 6 - Prob. 30QCh. 6 - Prob. 31QCh. 6 - Prob. 32QCh. 6 - Prob. 33QCh. 6 - Prob. 34QCh. 6 - Prob. 35QCh. 6 - Prob. 36QCh. 6 - Prob. 37QCh. 6 - Prob. 38QCh. 6 - Prob. 39QCh. 6 - Prob. 40QCh. 6 - Prob. 41QCh. 6 - Prob. 42QCh. 6 - Prob. 43QCh. 6 - Prob. 44QCh. 6 - Prob. 45Q
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Suppose a 151 mm focal length telephoto lens is being used to photograph mountains 10 km away. a. Where is the image in meters? b. What is the height of the image in centimeters of a 2530 m high cliff on one of the mountains? (Include the sign of the value in your answer.)arrow_forwardOutline the invention of a telescope. Describe the working of a telescope.arrow_forward2. Write down the nature of the images for the astronomical telescope, Galilean telescope and the micro- scope. Are the images inverted? Erect? Real? Virtual?arrow_forward
- Draw a labelled ray diagram of a refracting telescope. Show tge images formed by the two lensesarrow_forwardLet's say we're considering one particular telescope. If we want to see a bigger piece of the sky, what should we do? a Point the telescope at a different part of the sky b Use an eyepiece with a longer focal length c Use an eyepiece with a shorter focal length d Each particular telescope can only show one size of "piece of the sky"arrow_forwardWhich of these is NOT one of the largest optical telescopes in the world? Answers: A. Southern African Large Telescope B. Hobby Eberly Telescope C. Yerkes Telescope D. Keck I Telescope E. Hale Telescopearrow_forward
- Draw the light path for a Refracting telescope. Be sure to label all the parts and describe the purpose of each part. What are the advantages and disadvantages of a refracting telescope?arrow_forwardThe focus location that would be most inconvenient for a very large telescope is the a. Newtonian focus. b. prime focus. c. coudé focus d. Cassegrain focus. e. refracting focus.arrow_forwardPeople 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.arrow_forward
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