AST-0009 Lecture Notes - Lecture 6: Reflecting Telescope, Radiography, Hubble Space Telescope

• School: Tufts University
• Department: Astronomy
• Course: AST-0009
• Professor: Danilo Marchesini

Document Summary

Telescope is a tool used to gather light from objects in the universe: refracting telescope uses a glass lens to concentrate incoming light. First kind (galileo"s: relecting telescope uses mirrors to concentrate incoming light. Easier to build, as large as needed. Three main functions of a telescope: most important: to gather as much light as it can to make objects appear brighter. A larger objective lens provides a brighter image (more photons in a shorter amount of time: to see ine detail (resolution, to magnify. Size of telescope is size of primary mirror (other mirrors merely focus and redirect collected light) Diferences in the temperature and density of small portions of.