21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
6th Edition
ISBN: 9780393874921
Author: PALEN
Publisher: Norton, W. W. & Company, Inc.
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Chapter 6, Problem 16QP
To determine
The main disadvantage of telescope with simple lens over a refracting telescope.
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Chapter 6 Solutions
21ST CENT.ASTRONOMY(LL)W/CODE WKBK PKG.
Ch. 6.1 - Prob. 6.1ACYUCh. 6.1 - Prob. 6.1BCYUCh. 6.2 - Prob. 6.2CYUCh. 6.3 - Prob. 6.3CYUCh. 6.4 - Prob. 6.4CYUCh. 6.5 - Prob. 6.5CYUCh. 6 - Prob. 1QPCh. 6 - Prob. 2QPCh. 6 - Prob. 3QPCh. 6 - Prob. 4QP
Ch. 6 - Prob. 5QPCh. 6 - Prob. 6QPCh. 6 - Prob. 7QPCh. 6 - Prob. 8QPCh. 6 - Prob. 9QPCh. 6 - Prob. 10QPCh. 6 - Prob. 11QPCh. 6 - Prob. 12QPCh. 6 - Prob. 13QPCh. 6 - Prob. 14QPCh. 6 - Prob. 15QPCh. 6 - Prob. 16QPCh. 6 - Prob. 17QPCh. 6 - Prob. 18QPCh. 6 - Prob. 19QPCh. 6 - Prob. 20QPCh. 6 - Prob. 21QPCh. 6 - Prob. 22QPCh. 6 - Prob. 23QPCh. 6 - Prob. 24QPCh. 6 - Prob. 25QPCh. 6 - Prob. 26QPCh. 6 - Prob. 27QPCh. 6 - Prob. 28QPCh. 6 - Prob. 29QPCh. 6 - Prob. 30QPCh. 6 - Prob. 31QPCh. 6 - Prob. 32QPCh. 6 - Prob. 33QPCh. 6 - Prob. 34QPCh. 6 - Prob. 35QPCh. 6 - Prob. 36QPCh. 6 - Prob. 37QPCh. 6 - Prob. 38QPCh. 6 - Prob. 39QPCh. 6 - Prob. 40QPCh. 6 - Prob. 41QPCh. 6 - Prob. 42QPCh. 6 - Prob. 43QPCh. 6 - Prob. 44QPCh. 6 - Prob. 45QP
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- A telescope has an objective lens having a focal length of 10 m and a diameter of 100 cm. What is the magnification provided by this telescope if its eyepiece has a focal length of 5 cm?arrow_forwardYou are taking a picture of a giraffe that is standing far away from you. The image is just too small, so you swap the 50-mm-focal-length lens in your camera for a 600 mm telephoto lens. By what factor does this increase the size of the image?arrow_forwardThe objective mirror of a telescope has a diameter of 5000 mm and a focal length of 8000 mm. An eyepiece has a focal length of 40 mm. What is the magnification of the telescope using this eyepiece?arrow_forward
- A Cassegrain telescope is a reflecting telescope that uses two mirrors, the secondary mirror focusing the image through a hole in the primary mirror (similar to that shown in the figure (Figure 1)). You wish to focus the image of a distant galaxy onto the detector shown in the figure. If the primary mirror has a focal length of 2.5 m, the secondary mirror has a focal length of -1.5 m and the distance from the vertex of the primary mirror to the detector is 15 cm. Figure 1 of 1 Secondary Primary Detector Part A What should be the distance between the vertices of the two mirrors? Express your answer using two significant figures. VO ΑΣΦ Submit ہے next> ? Provide Feedback My Answers Give Up m Continuearrow_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_forwardThe length of a telescope is 1 m. If the focal length of the eyepiece is 2 cm, what is the magnification of this telescope? 100 50 20 48 49 10 52arrow_forward
- The primary mirror of a telescope is 2.4 m in diameter. At what altitude will you need to pilot the telescope in order to resolve things on a 3.0 cm scale?arrow_forwardYou are using a telescope is to resolve two distant stars as well as possible. Which of the following modifications will increase the resolution of the telescope? Question 8 options: Use a filter to filter out all but the red light. Use a filter to filter out all but the blue light. Use a lens of smaller diameter Use a lens of larger diameter None of these modifications will impact the resolution of the telescope.arrow_forwardQ5: A refracting telescope has the objective lens of focal length (10 m). Assume it is used with an eyepiece of focal length (2 cm). What is the magnification of this telescope?arrow_forward
- Telescopes do more than just magnify images. In fact, if all they did was magnify images Galileo would have never seen the moons of Jupiter. What other important thing does the telescope do? a)The telescope is better at tracking movement than the naked eye is. b)The telescope is able to take disorderly rays and collimate them. c)The telescope is able to discern more colors than the naked eye can. d)The telescope is able to gather more light than the naked eye can. Kepler's design allowed him to achieve better image quality and higher magnifications than Galileo's. However, his design has a significant drawback. What is it? a) Kepler's telescope has rays intersecting each other, which creates the possibility that they will interfere with each other. b) Kepler's telescope is less able to collimate chaotic incoming light. c) Kepler's telescope collects less light. d) Kepler's image is inverted, while Galileo's is upright.arrow_forwardA charged-couple device (CCD) detector ismounted at the focus of an f/7 reflecting telescope with a D= 50 cm mirror. The CCD chip contains 1024×1024 pixels, with each square pixel being 10μm on a side. What is the area (in square arcminutes) of the sky that is imaged on the entire chip?arrow_forwardIf you want to achieve a magnification of about 110x to 125x in the M603 telescope, what eyepiece do you need to use? a The 5mm eyepiece b The 7mm eyepiece c The 24mm eyepiece d The 31mm eyepiece e The 13mm eyepiecearrow_forward
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