Hubble’s Field of View. Large telescopes often have small fields of view. For example, the Hubble Space Telescope’s (HST’s) advanced camera has a field of view that is roughly square and about 0.06° on a side. a. Calculate the angular area of the HST’s field of view in square degrees. b. The angular area of the entire sky is about 41,250 square degrees. How many pictures would the HST have to take with its camera to obtain a complete picture of the entire sky?

Hubble’s Field of View. Large telescopes often have small fields of view. For example, the Hubble Space Telescope’s (HST’s) advanced camera has a field of view that is roughly square and about 0.06° on a side. a. Calculate the angular area of the HST’s field of view in square degrees. b. The angular area of the entire sky is about 41,250 square degrees. How many pictures would the HST have to take with its camera to obtain a complete picture of the entire sky?

Astronomy

1st Edition

ISBN:9781938168284

Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Publisher:Andrew Fraknoi; David Morrison; Sidney C. Wolff

Chapter18: The Stars: A Celestial Census

Section: Chapter Questions

Problem 13E: Suppose you want to determine the average educational level of people throughout the nation. Since...

See similar textbooks

Similar questions

Astronomers use a light-year to measure distance. A light-year is the distance light travels in one year. The speed of light is approximately 300,000 km/sec.a. How long is 1 light-year in kilometers?b. The nearest star (other than the sun) is Alpha Centauri. It is 4.34 light-years from Earth. How far is that in kilometers?c. How long will it take a rocket traveling 42,000 km/hr to reach Alpha Centauri?
What 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 1
Early astronomers thought that galaxies were single stars. Why was this mistake easy to make? A. Galaxies are so far away that they look like a single star. B. Galaxies are made of stars that you can only see one at a time. C. Light from galaxies collects into a single beam. D. Earth is small and galaxies are much larger.
The moon is 1.3 light-seconds away. Imagine you are standing at the Canadian Space Agency headquarters in St. Hubert, Quebec and you bounce a 755 MHz radio signal off the moon (the moon acts like a mirror, reflecting the signal, such that it comes back to you). How long will it take for that radio signal to get back to you on earth? Answer in seconds with one decimal place.
hding Light Years 26.1 How far is it from Los Angeles to New York? Pretty far, but it can still be measured in miles or kilometers. How far is it from Earth to the Sun? It's about one hundred forty-nine million, six hundred thousand kilometers (149,600,000, or 1.496 x 10 km). Because this number is so large, and many other distances in space are even larger, scientists developed bigger units in order to measure them. An Astronomical Unit (AU) is 4:496x 108 km (the distance from Earth to the sun). This unit is usually used to measure distances within our solar system. To measure longer distances (like the distance between Earth and stars and other galaxies), the light year (ly) is used. A light year is the distance that light travels through space in one year, or 9.468 x 1012 km. 28.1 n the in tem. EXAMPLES 1. Converting light years (ly) to kilometers (km) Earth's closest star (Proxima Centauri) is about 4.22 light years away. How far is this in kilometers? Explanation/Answer: Multiply…
The spectrum of a typical star shows absorption lines at different wavelengths than their laboratory values. If the observed wavelength is greater than its laboratory value of 656.3 nm, one can conclude that ... A. The separation between Earth and the star is decreasing. B. The separation between Earth and the star is increasing. O C. The separation between Earth and the star is unchanging D. No conclusion is possible.
. The Sun as seen from Earth has an apparent magnitude of -26 in the B-band.1. What is the Sun’s absolute magnitude (in the B-band)?2. What would its apparent magnitude be as seen from Jupiter? (Jupiter is approximately 5.2 AU from theSun.)3. At a certain distance d from a Star A, its apparent brightness is f. If we were to travel at a relativisticvelocity to a point in space which is 5 times further away, how much fainter would the star appear to us?(i.e. what fraction of its original apparent brightness would it now appear to us?)
Choose the appropriate wavelengths of light in nanometers. Note that answers may be used multiple times or not at all. eWhat is the shortest wavelength of UVC light? What is the shortest wavelength of light that our eyes usually can see? 8 What is the shortest wavelength of UVB light? Submit Answer Tries 0/2 What wavelength of light do we call red? What is the longest wavelength of light that our eyes usually can see? 8What wavelength of light is part of the infrared region?
Why don’t we see hydrogen Balmer lines in the spectra of stars with temperatures of 3,200 K? a. There is no hydrogen in stars this cool. b. The stars are hot enough that most of the hydrogen is ionized and the atoms cannot absorb energy. c. These stars are so cool that nearly all of the hydrogen atoms are in the ground state. d. Stars of this temperature are too cool to produce an absorption spectrum. e. Stars of this temperature are too hot to produce an absorption spectrum.
The spectrum of a typical star shows absorption lines at different wavelengths than their laboratory values. If the observed wavelength is less than its laboratory value of 656.3 nm, one can conclude that... A. The separation between Earth and the star is decreasing. B. The separation between Earth and the star is increasing. C. The separation between Earth and the star is unchanging D. No conclusion is possible.
Of 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.
which types of earth based telescopes can successfully observe celestial objects ? ( select all that apply) a. gamma ray telescope b. x ray telescope c.UV telescope d. visible light telescope e.infrared telescope f. radio telescope