NATS 1740 Lecture Notes - Lecture 10: Geocentric Model, Light Pollution, Moodle

• School: York University
• Department: Natural Science
• Course: NATS 1740
• Professor: Tatiana Paulin

Document Summary

Now that we have studied what light is, and how it can be used to extract information about far-away sources, let us finally go and survey the universe at large! The actual discoveries made about our universe, coming from light collected from far-away objects, have exploded since the invention of the telescope (and even brought about the scientific. Revolution with the dethroning of the geocentric model of the universe), and especially since humans started putting telescopes up in space, above earth"s limiting atmosphere. A variety of telescope designs exist, as well as detectors that can be attached to the telescopes to permanently record the collected light, for further analysis on computers. Main topics: the process of seeing: human eyes versus telescope, telescopes" 2 critical properties: light-collecting power and angular resolution, telescopes" 2 basic designs: reflector and refractor, types of telescopic observations: imaging, spectroscopy, timing, earth"s atmosphere and its limitations. Important notes: make sure you view all of the.