21ST C ASTRO EBOOK+SW5=SS+VGCRD+LEARN/DO
6th Edition
ISBN: 9780393870152
Author: PALEN
Publisher: Norton, W. W. & Company, Inc.
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Chapter 6, Problem 12QP
To determine
The factor which determines the resolution of ground-based telescopes.
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One of the disadvantages of a radio telescope compared to a reflecting optical telescope is its inability to
a.
reveal finer detail.
b.
detect cool hydrogen.
c.
see through interstellar dust.
d.
see some of the most distant objects in the universe.
The 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.
A telescope that suffers from chromatic aberration and has a low light-gathering power is most likely a(n)
a.
small diameter reflecting telescope.
b.
small diameter refracting telescope.
c.
large diameter refracting telescope.
d.
large diameter reflecting telescope
e.
infrared telescope.
Chapter 6 Solutions
21ST C ASTRO EBOOK+SW5=SS+VGCRD+LEARN/DO
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 new generation of telescopes is currently being built that overcomes the limitations of the older large telescopes. Some of these new telescopes a. use segmented mirrors. b. use mirrors that are very thin. c. use active optics to control the shape of the mirror. d. do all of the above. e. do none of the above.arrow_forwardWhich of the following is NOT an advantage that a REFLECTING telescope has over a REFRACTING telescope? a. glass need not be as of high quality. b. can see stars during the day. c. less expensive. d. no chromatic aberration. e. mirror can be supported more fully than lens. 2. When looking at a cross section diagram of a planet, why might the layer of a planet between the core and crust appear green? a. There is a lot of methane in that layer.b. To represent chlorophyll in the atmosphere. c. This layer is typically made of green jade.d. Green is the middle color of ROYGBIV, so it was used to represent the middle layer. e. Because such layer is composed of rocks containing a lot of Olivine.arrow_forwardThe resolving power of an optical telescope with a diameter of 232 cm is a. 0.05 arc seconds. b. 232 arc seconds. c. 2.32 arc seconds. d. 5 arc seconds. e. 11.5 arc seconds.arrow_forward
- Which of the following telescopes must be used above Earth’s atmosphere? a. an optical telescope b. the VLBI telescope c. an X-ray telescope d. a radio telescope e. none of the abovearrow_forwardWhich of the following describes interferometry? a. It is used to improve resolving power. b. It decreases the chromatic aberration of a telescope. c. It works only for large X-ray and ultraviolet telescopes. d. It requires that radio telescopes be within a few hundred feet of each other. e. None of the above statements are true.arrow_forward4. For a space-based imaging system that uses a fixed size aperture for both visible and infrared sensors, given the characteristics listed, what would be the theoretical resolution for each of the sensors? Aperture diameter = 1.1 m. Visible wavelength = 0.5 micron. IR wavelength = 2.0 micron. Altitude = 400 km. (note: 1 micron = 1E-6 m)arrow_forward
- Radio telescopes have poor resolving power because a. their diameters are so large. b. the energy they receive is not electromagnetic radiation. c. radio waves have long wavelengths. d. a and b are true. e. none of the above are true.arrow_forwardWhich of the following is NOT a limitation associated with radio telescopes? a. a short focal length b. poor resolution c. low-intensity radiation d. interference e. none of the abovearrow_forwardThe Moon has no sustained atmosphere. What advantages would you have if you built an observatory on the lunar surface? (Select all that apply.) a. On Earth, large mirrors in telescopes can sag under their own weight. Without an atmosphere to apply pressure, mirrors on the Moon would not sag. b. We could observe during the day. Without an atmosphere, sunlight is not scattered and the sky remains dark. c. We could observe continuously, because there would never be any clouds. d. The Moon is closer to many stars than the Earth, and lunar-based telescopes would produce images with more detail based on this closer proximity. e. There is no atmosphere to absorb or scatter radiation, so all wavelengths of light could be observed with lunar-based telescopes, from radio waves to gamma rays. f. Distortion of mirrors due to temperature shifts would no longer be an issue, without an atmosphere to retain the heat from sunlight. g. Without atmospheric turbulence, there would be no…arrow_forward
- The sidereal drive of a telescope mounting must turn the telescope a. southward about the polar axis. b. eastward about the polar axis. c. westward about the polar axis. d. northward about the polar axis. e. in no direction; none of the above are true.arrow_forwardA device that analyzes light by spreading it out according to wavelength is called a(n) a. interferometer. b. camera. c. photometer. d. spectrograph.arrow_forward49.) A refracting telescope uses a. both mirrors and lenses to collect and focus light from distant objects. b. only mirrors to collect and focus light from distant objects c. only lenses to collect and focus light from distant objects.arrow_forward
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