NATS 1740 Lecture Notes - Lecture 1: Right Angle, International Astronomical Union, Angular Diameter

• School: York University
• Department: Natural Science
• Course: NATS 1740
• Professor: Patrick Hall

Document Summary

For example orion the hunter: physically stars have nothing to do with each other in a constellations, they have different distances but appear projected onto the sky, 88 borders of constellation was chosen in 1928 by international. Milky way it is band of light known as milky way circles all around the celestial sphere passing through dozens of constellations. Zenith it is a 90-degree angle, which is pointing directly above you on the celestial sphere. Nadir points beneath you on the celestial sphere. Meridian it is a line from north to south that passes through zenith: use degrees to measure angular distance, angular size, and angles, right angle corner of a square, is a 90 degree angle. If you face the north side and turn the face east, it"s pretty much a 90 degree angle. Altitude it is an object on the sky is its angle above the horizon.