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Tools of Astronomy

Tools of Astronomy. Electromagnetic Radiation. Light travels as an “Electromagnetic” Wave The light you see is called Visible Light Speed of light: 186,000 Miles/Second Spectrum : the different colors and wavelengths of light. Electromagnetic Spectrum (Energy Spectrum).

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Tools of Astronomy

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  1. Tools of Astronomy

  2. Electromagnetic Radiation • Light travels as an “Electromagnetic” Wave • The light you see is called Visible Light • Speed of light: 186,000 Miles/Second • Spectrum: the different colors and wavelengths of light.

  3. Electromagnetic Spectrum(Energy Spectrum) Infrared Ultraviolet _____________ visible light_____________ Long waves ROY G BIV Short waves (infrared wavelengths) (Visible) ( Ultraviolet Wavelength)

  4. Spectroscope • Splits light – into it’s “Colors” • Identifies: 1. Elements that make up a Star 2. Star Temperature Prism: triangular piece of glass that splits up light.

  5. Types of Telescopes • Optical: gathers visible light • Radio: gathers invisible energy • Optical: use lenses and mirrors collects and focuses light.

  6. Refracting Telescopes: Use lenses

  7. Reflecting Telescopes: Use Mirrors Curved Mirrors Example: Hubble space telescope The largest telescopes are Reflecting

  8. Hans Lippershey • Invented the Telescope

  9. Galileo • First person to use a telescope to observe objects in the night sky.

  10. Radio Telescopes • Gathers invisible radio energy Collects and focuses energy

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