PHYS 1055 Lecture Notes - Lecture 2: Angular Diameter, Minute And Second Of Arc, Northern Hemisphere
Document Summary
Constellations: a constellation is a region in the sky with well-defined borders; the familiar patterns of stars merely help us locate the constellations. International astronomical union (iau) created the names and borders of the 88 official constellations. If you stay in one spot, basic patterns of motion in the sky will stay the same from one night to the next, If you travel far north or south, you"ll see a different set of constellations: additionally if you stay in one place, you"ll see different constellations at different times of year. The altitude of the celestial pole in your sky is equal to your latitude. If you see the north celestial pole at an altitude of 40 degrees above your north horizon, your latitude is. Variation with time of year: the night sky changes throughout the year because of earth"s changing positions in its orbit around the.
