2. Describe Differences Between a Refracting Telescope and a Reflecting Telescope
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Chapter 3&8
1. List the constituents of the electro-magnetic spectrum and discuss their relative wavelengths and energies.
2. Describe differences between a refracting telescope and a reflecting telescope.
3. Discuss the relationship of the aperture of a telescope and its
a) light-gathering power
b) resolving power
4. What determines the magnifying power of a telescope?
5. What is meant by “adaptive optics”; how does it work, and why is it so important in astronomy today? 6. What are the advantages of telescopes in space?
7. Give the basic definition of “parsec” and discuss the relationship between the distance of a star and its parallax shift.
8. Discuss the apparent magnitudes and luminosity of a star. How can knowing both of them give us a star’s distance?
9. Discuss the spectral classification of stellar temperatures. What are the spectral classes?
10. How does the brightness of a star depend on temperature? 11. Discuss the H-R diagram, what it plots, and where various kinds of stars are located on the diagram.
12.Describe three methods for detecting binary stars.
13. What is the chief method of measuring the mass of an object in space?
14. Describe the roles of convection, conduction and radiation in the interiors of stars 15. Describe the process of nuclear fusion in some detail.
16. Explain the difference between the nuclear fission and fusion.
17. Describe the chief characteristics of the sun.
18. Draw a labeled sketch of the surface structure of the sun. 19. Describe what the continuous, emission, and absorption spectra look like, and discuss the circumstances under which each is formed.
20. How can you estimate the temperature of a star with your unaided eye? How does this work?
21. What can the doppler effect tell us about stars and galaxies? How does this work?
22. List and describe the various features observed in and above the photosphere of the sun. 23. Discuss sunspots in some detail. including their structure, formation, and the Babcock sunspot cycle.