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  1. The Sun-Earth-Moon System Tools of Astronomy The Moon Sun-Earth-Moon System Chap. 28

  2. Objectives Tools of Astronomy – 28.1 • describe electro-magnetic radiation. • explain how telescopes work • describe space exploration http://www.physics.unr.edu/cshirley/images.html

  3. Electromagnetic Radiation (light)

  4. Electromagnetic Radiation (light) • Only part of the spectrum is visible (ROY G BIV)

  5. Electromagnetic Radiation (light) • Only part of the spectrum is visible (ROY G BIV) • Most ‘light’ cannot be seen by the human eye

  6. Electromagnetic Radiation (light) • Only part of the spectrum is visible (ROY G BIV) • Most ‘light’ cannot be seen by the human eye • Different light has different wavelengths

  7. Electromagnetic Radiation (light) • Only part of the spectrum is visible (ROY G BIV) • Most ‘light’ cannot be seen by the human eye • Different light has different wavelengths • Frequency is related to wavelength The longer the wave the the frequency

  8. Electromagnetic Radiation (light) • Only part of the spectrum is visible (ROY G BIV) • Most ‘light’ cannot be seen by the human eye • Different light has different wavelengths • Frequency is related to wavelength The longer the wave the shorter the frequency

  9. Telescopes Yerkes observatory (WI), 1897

  10. Telescopes • Introduction

  11. Telescopes • Introduction • Purpose – to collect light and focus it Globular Star Cluster M15, Milky Way

  12. Telescopes • Introduction • Purpose – to collect light and focus it • Telescopes magnify objects This is the secondary function of a telescope

  13. Telescopes • Introduction • Types

  14. Telescopes • Introduction • Types • Refractor http://www.yesmag.bc.ca/how_work/telescope.html

  15. Telescopes • Introduction • Types • Refractor • Uses glass lenses

  16. Telescopes • Introduction • Types • Refractor • Uses glass lenses • Often made from two lenses – an objective and an eyepiece http://www.astro-tom.com/telescopes/telescopes.htm

  17. Telescopes • Introduction • Types • Reflector http://www.yesmag.bc.ca/how_work/telescope.html

  18. Telescopes • Introduction • Types • Reflector • Uses mirrors

  19. Telescopes • Introduction • Types • Reflector • Uses mirrors • Light often strikes a series of mirrors http://www.astro-tom.com/telescopes/telescopes.htm

  20. Telescopes • Introduction • Types • Reflector • Uses mirrors • Light often strikes a series of mirrors http://www.astro-tom.com/telescopes/telescopes.htm

  21. Telescopes • Introduction • Types • Benefits

  22. Telescopes • Introduction • Types • Benefits • Can utilize a variety of detectors

  23. Telescopes • Introduction • Types • Benefits • Can utilize a variety of detectors • Can focus more light than the eye

  24. Telescopes • Introduction • Types • Benefits • Can utilize a variety of detectors • Can focus more light than the eye • Can make time exposure photos http://www.wam.umd.edu/~iblumgar/eclipse.html

  25. Telescopes • Location

  26. Telescopes • Location • Away from cities

  27. Telescopes • Location • Away from cities • On high mountains

  28. Griffith Observatory – So. California ~1,100 feet

  29. Mt. Wilson Observatory – So. California ~5,600 feet

  30. http://www.ucolick.org/~kibrick/ Keck Observatory – Mauna Kea ~14,000 feet

  31. Telescopes • Location • Other telescopes • Radio-telescopes collect . http://pics.bothner.com/2002/RadioTelescope/

  32. Telescopes • Location • Other telescopes • Radio-telescopes collect radiowaves • Interferometry links multiple ________

  33. Telescopes • Location • Other telescopes • Radio-telescopes collect radiowaves • Interferometry links multiple telescopes

  34. VLA Radio Antennas – Socorro, NM

  35. Collecting data beyond Earth

  36. Collecting data beyond Earth • Space telescopes

  37. Collecting data beyond Earth • Space telescopes • Spacecraft/probes

  38. Collecting data beyond Earth • Space telescopes • Spacecraft/probes • Space station

  39. The End

  40. Objectives The Moon – 28.2 • describe the develop-ment of exploration of the Moon. • identify features on the Moon. • explain the theories about how the Moon formed.

  41. Historic Missions • Sputnik I (1957) The first , launched by .

  42. Historic Missions • Sputnik I (1957) The first satellite, launched by Russia

  43. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) first man in space, he was from .

  44. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) Yuri Gagarin first man in space, he was from Russia.

  45. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) • Mercury (1961) was the first American in space.

  46. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) • Mercury (1961) Alan Shepard Jr was the first American in space.

  47. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) • Mercury (1961) • Gemini (1963-1966) This craft was designed to carry people.

  48. Historic Missions • Sputnik I (1957) • Vostok 1 (1961) • Mercury (1961) • Gemini (1963-1966) This craft was designed to carry 2 people.