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The equatorial coordinate system

The equatorial coordinate system. a system like latitude and longitude for the celestial sphere. Two lines on the sky: the celestial equator and the ecliptic. Revolution of the Earth about the Sun: an explanation for many astronomical phenomena. The seasonal changes in the night sky…

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The equatorial coordinate system

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Presentation Transcript

  1. The equatorial coordinate system a system like latitude and longitude for the celestial sphere

  2. Two lines on the sky: the celestial equator and the ecliptic

  3. Revolution of the Earth about the Sun: an explanation for many astronomical phenomena The seasonal changes in the night sky… The difference between sidereal and solar time

  4. Why the solar day varies, Part 1…variable angle between celestial equator and ecliptic

  5. Why the solar day varies, part 2…the ellipticity of the Earth’s orbit + Kepler’s 2nd Law

  6. The Equation of Time

  7. The “parade of the constellations” Demo Also look at online animation with the book web site

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