21ST CENT.AST.W/WKBK+SMARTWORK >BI<
6th Edition
ISBN: 9780393415216
Author: Kay
Publisher: NORTON
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Chapter 6, Problem 14QP
To determine
The factor which determines the resolution of ground-based telescopes.
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Which 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 above
The Very Long Baseline Array (VLBA) is
a.
the highest resolution optical telescope ever built.
b.
located in Arecibo, Puerto Rico.
c.
a matched pair of 8-meter telescopes, one of which is in Chile and the other in Hawaii.
d.
an airborne infrared telescope.
e.
a set of radio telescopes linked together electronically to provide very high resolution.
Which of the following explain why far infrared astronomy must be done from high-flying aircraft?
a.
Far infrared radiation is absorbed low in Earth’s atmosphere.
b.
Far infrared photons are quite energetic.
c.
Far infrared telescopes are not very heavy.
d.
Far infrared sources are very bright.
e.
None of the above are correct.
Chapter 6 Solutions
21ST CENT.AST.W/WKBK+SMARTWORK >BI<
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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- 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_forwardOf the following observing devices, the one that is designed to make observations at visible wavelengths is a. Chandra. b. Sofia. c. the Hubble Space Telescope. d. the Spitzer Space Telescope e. the Compton Space telescope.arrow_forwardImagine that you are the head of a funding agency that can afford to build only one telescope. Which of the four proposed telescopes below would be best to support? O A. a radio telescope in orbit above the Earth B. A gamma ray telescope in orbit above the Earth O C. An x-ray telescope located on a mountain in Peru D. An ultraviolet telescope located in the Mojave desertarrow_forward
- The 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_forwardWhen two objects are far away, an observer moving will see a shift of the closest object relative to the farthest object. This shift is known as a.triangulation. b.parallax. c.a baseline. d.a degree. e.an arc second. What advantages do large telescopes have over smaller ones? a.larger collecting areas b.both superior angular resolution and less aberration c.superior angular resolution d.less aberration e.better exposure times What is the name given to a day which uses the stars as a reference? a.solar day b.diurnal day c.sidereal day d.orbital day e.none of the mentioned choicesarrow_forwardWhat is the ratio of the light-gathering power of a 10-meter telescope to that of a 1‑meter telescope? a. 10 to 1 b. 1 to 10 c. 100 to 1 d. 1 to 100 e. 3.2 to 1arrow_forward
- If a luminous object were moved to one-half the original distance, it would appear a. one-half as bright. b. just as bright. c. twice as bright. d. four times brighter. e. eight times brighter.arrow_forwardWhy do radar satellites typically use a sun-synchronous, dawn-dusk orbit? A. To optimize the collection geometry for higher resolution images. B. To maintain a constant solar zenith angle on the targets. C. To maximize the access time for ground targets. D. To maximize the available power to the solar panels.arrow_forwardSpace-based telescopes are needed to observe electromagnetic energy that cannot reach the surface of Earth. The regions of the electromagnetic energy spectrum that do reach Earth’s surface pass through what are referred to as a. atmospheric windows. b. atmospheric portals. c. electromagnetic openings. d. extreme wavelengths. e. visible and radio waves.arrow_forward
- Which 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_forwardImagine that you are the head of a funding agency that can afford to build only one telescope. Which of the four proposed telescopes below would be best to support? OA. a radio telescope in orbit above the Earth B. A gamma ray telescope in orbit above the Earth OC. An x-ray telescope located on a mountain in Peru D.An ultraviolet telescope located in the Mojave desertarrow_forward1.The speed of light in vacuum is 3 X 105 km/s and 1 km = 1,000 m and 1m = 100 cm. Use c = f λ to determine the frequency of a photon with a wavelength of 2 cm. 2.At what absolute temperature (K) is Fahrenheit (F) temperature twice the Celsius temperature (C)?arrow_forward
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