AST201H1 Chapter Notes - Chapter 6: Spectral Resolution, Adaptive Optics, Sky Radio

• School: UTSG
• Department: Astronomy & Astrophysics
• Course: AST201H1
• Professor: Michael Reid

Document Summary

Chapter 6: telescopes: lens: bends light and creates an image on retina refraction occurs because light moves slower in denser matter results in a change in direction. Parallel rays converge at a focus - light that enters the lens farther from the center are bent more and rays that pass directly though are not bent at all. X parallel rays do not converge but still follow rules from above. The rays bend to form an image place where the image appears in focus is called the focal plane of the lens. Controls how much light enters the eye by adjusting the size of its opening: pupil: does not play direct role in image formation. Dilates in low light, constricts in bright light: retina: contains light-sensitive (cones and rods) Similar to camera except camera is permanent. Detector: any device that records light, including photographic films and various types of digital-imaging chips. Camera acts as the lens and detector acts as retina.