Some notes Astronomy 1307
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This 2 page Class Notes was uploaded by sashiel pina on Sunday October 4, 2015. The Class Notes belongs to Astronomy 1307 at University of Texas at El Paso taught by Hector Noriega-Mendoza in Summer 2015. Since its upload, it has received 76 views. For similar materials see Introductory Astronomy in Astronomy at University of Texas at El Paso.
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Date Created: 10/04/15
Astronomy Class Run Down October 22015 Today we Discussed telescopes 0 Determine the light gathering power 0 Limiting magnitude of a telescope 0 Third limitation of the human eye light gathering power bright objects Refers to diameter of telescope Formula for how much light an instrument can collect dimmer objects Example determine the LGP and LM of a 2 inch pair of binoculars a LGP 202quot210quot2100 b LM 6log10004 which then equals 6204 add six last so 6511 this answer tells how deep you can see objects in space 11th mag astros Example 2 A 20 inch telescope can see even deeper LGP Zoo2quot2100quot210000 which means 10000 times more light collected than the human eye LM 6log 1000004 6404610 the magnitude can see as deep as magnitude 16 A Third limitation Objects of magnitude 6 and above are not visible we can only see certain colors not including uv or infrared we can see rainbows because of the prism as introduced by Issac Newton Level of detail the human eye can see 1 are detected by human eye as point like objects so it doesn t detect any size Sources that are closer together than 1 are detected as a single object 160th of an angular degree Refractors are longer lens are at the end of where you see the object Re ectors
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