Introduction to the Night Sky - PowerPoint PPT Presentation

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Introduction to the Night Sky

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  1. Introduction to the Night Sky Spring 2007 Heart of the Valley Astronomers

  2. Mercury

  3. Venus

  4. Saturn

  5. Encaledus

  6. Jupiter

  7. Io and Eruptions

  8. Planets versus Stars Mars Arcturus Vega Uranus Planets appear as discs of light in a telescope. Stars look like smaller pinpoints.

  9. How long would it take Voyager II… Neptune? 12 years Sirius? …to reach About 180,000 years

  10. Planets are much closer Neptune = 2.8 billion miles How does this compare to a walk on Earth? The Corvallis Clinic Think about a walk from Wilson School to… versus Sirius – almost 19,000x farther than Neptune = 52 trillion miles The South Pole

  11. Star Colors & Temperature

  12. Nebula – Gas Clouds

  13. Leo’s Galaxies

  14. Where do we get seasons? Solar energy From the tilt of Earth as it spins

  15. Telescopes!

  16. Earth’s air stops a lot of energy!

  17. Refractor Telescope

  18. Reflector Telescope

  19. Schmidt-Cassegrain Telescope

  20. Getting Started