ASTR-1010 Lecture Notes - Lecture 8: Reflecting Telescope, Diffraction-Limited System, Refraction

• School: Clemson University
• Department: Astronomy
• Course: ASTR-1010
• Professor: Lih- Sin The

Document Summary

Light comes in at an angle side nearest the wave slows so the far side can catch up. Index of refraction - (cid:1866)= (cid:3030: (cid:1855)=(cid:885). (cid:882)(cid:882) (cid:1876) (cid:883)(cid:882)8 (cid:1865)/(cid:1871, (cid:1874)=(cid:1874)(cid:1857)(cid:1864)(cid:1867)(cid:1855)(cid:1872)(cid:1877) lens. Lens bend light that are parallel so that they converge at the point called the focus of the. Focal plane where light comes into focus image is upside-down because our eyes only have one convex lens. Camera has a convex lens that focuses light then captures it with a detector (like a retina) Can sharpen, combine, remove objects, and refine images using computer software called image processing and is used by many astronomers. Bigger telescopes have greater resolution due to the fact that there is less interference with the image. Rayleigh"s criterion when you"re able to resolve two point sources meaning you can distinguish between the two objects. Diffraction limit limit on angular resolution: (cid:884). 5(cid:1876)(cid:883)(cid:882)5 (cid:1875)(cid:1874)(cid:1857)(cid:1864)(cid:1857)(cid:1866)(cid:1859)(cid:1872) (cid:1856)(cid:1865)(cid:1857)(cid:1872)(cid:1857)(cid:1870) (cid:1867)(cid:1858) (cid:1872)(cid:1857)(cid:1864)(cid:1857)(cid:1871)(cid:1855)(cid:1867)(cid:1868)(cid:1857)