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Joel E. Tohline, Alumni Professor
ASTR Spring 2008 Joel E. Tohline, Alumni Professor 247 Nicholson Hall [Slides from Lecture06]
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What about the Dime? NOTE: A dime held 1 meter from your eye subtends an angle of 1°.
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Star Trails …
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… looking west!
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Seasons …
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Moon’s orbit around the Earth
Responsible for our familiar calendar month. Period (of orbit) = 2.36 x 106 s = days (Appendix 3). Moon’s orbital plane does not coincide with the ecliptic plane; it is inclined by approximately 8° to the ecliptic (§2-6). Much more about the Moon’s orbit in Chapter 3!
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