ASTR 1101 : Astronomy Notes-First Day To Midterm
Document Summary
Planets: motion, outer planets have weird irregular motion throughout the year. Solstices and exquinoxes: directions, march equinox-east, december solstice-south east, june solstice-north east, solstice celebrations, christmas, spain bonfires. Archaeoastronomy: people are trying to find reasons for alignments to structures and landmarks, stonehenge-if you stand in center of circle and look at the heel stone that direction is midsummer sunrise. Many made their own claims for the purpose of stonehenge, Galileo: the new physics, discovered law of intertia, studied acceleration and motion. Telescopes: military use, military has launched earlier versions of the hubble space telescope, used as spy telescopes, refractor, convex lense, main optics is the lense. Invented by hans leapershay in 1609, galileo heard and then made his own version: reflector, concave mirror, newton designed it with a small flat mirror to reflect the light to the eyepiece, placement, often on desert mountaintops.
