AS101 Chapter Notes - Chapter 2: Photosphere, Declination, Solar Eclipse
Document Summary
Constellations one of the stellar pattens identified by name, usually of mythological gods, people, animals, or objects. Also the region of the sky containing the pattern: constellation boundaries were approximate, thus one star could be apart of 2 constellations. 88 official constellations: constellation represents not a group of stars, but a boundary. All within the boundary belong to the constellation. Asterisms a named grouping of stars that is not a recognized constellation. The larger the number, the fainter the star: brightest stars are first magnitude, all the way to sixth magnitude these stars are barely visible to the human eye, hipparchus is believed to have compiuled the first star catalogue. Appartent visual magnitude a measure if the brightness of a star as seen by human eyes on earth. Flux a measure of the flow of energy out of a surface.
