Telescopes: Crash Course Astronomy #6

2015-02-19

[public] 1.20M views, 22.6K likes, 295 dislikes audio only

Today Phil explains how telescopes work and offers up some astronomical shopping advice.

Check out the Crash Course Astronomy solar system poster here: http://store.dftba.com/products/crashcourse-astronomy-poster

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Chapters:

Introduction 00:00

How do Telescopes Work? 0:47

Refraction 2:50

Magnification 3:48

Resolution 4:28

Reflectors 5:19

What Kind of Telescope Should You Buy? 6:19

Technology and the Light Spectrum 7:45

Review 11:14

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PHOTOS/VIDEOS

http://en.wikipedia.org/wiki/Galileo_Galilei#mediaviewer/File:Justus_Sustermans_-_Portrait_of_Galileo_Galilei,_1636.jpg

http://en.wikipedia.org/wiki/Human_eye#mediaviewer/File:Human_eye_with_blood_vessels.jpg

http://en.wikipedia.org/wiki/Refracting_telescope#mediaviewer/File:Refractor_Cincinnati_observatory.jpg

http://commons.wikimedia.org/wiki/File:Positive_lens_2.svg

http://www.eso.org/public/images/yb_vlt_moon_cnn_cc/

http://en.wikipedia.org/wiki/Jupiter#mediaviewer/File:Jupiter_MAD.jpg

http://en.wikipedia.org/wiki/Wide_Field_and_Planetary_Camera#mediaviewer/File:Hubble_Images_of_M100_Before_and_After_Mirror_Repair_-_GPN-2002-000064.jpg

http://commons.wikimedia.org/wiki/File:Prime_focus_telescope.svg

http://commons.wikimedia.org/wiki/File:Inspection_of_the_primary_mirror_of_the_Hubble_Space_Telescope8218871.jpg

https://www.youtube.com/watch?v=ui6ernRFxOg#t=2m22s

http://en.wikipedia.org/wiki/William_Herschel#mediaviewer/File:William_Herschel01.jpg

http://commons.wikimedia.org/wiki/File:Grand_Canyon_National_Park,_23_Annual_Star_Party_2013_-_0082_-_Flickr_-_Grand_Canyon_NPS.jpg

http://commons.wikimedia.org/wiki/File_talk:EM_spectrum.svg#mediaviewer/File:EM_spectrumrevised.png

https://www.youtube.com/watch?v=RqX9vLj3_7w#t=4m52s

http://pprc.qmul.ac.uk/~still/wordpress/?page_id=138

http://en.wikipedia.org/wiki/VERITAS#mediaviewer/File:MMT_FLWO_Amado_AZ_10359.jpg

http://en.wikipedia.org/wiki/Astrophotography#mediaviewer/File:Henry_Drape_Orion_nebula_1880_inverted.jpg

http://en.wikipedia.org/wiki/Astrophotography#mediaviewer/File:Orion-Nebula_A_A_Common.jpg

http://en.wikipedia.org/wiki/File:PIA18593-Mars-CometSidingSpring-NEOWISE-20140728.jpg

http://en.wikipedia.org/wiki/File:NASA-HS201427a-HubbleUltraDeepField2014-20140603.jpg

http://upload.wikimedia.org/wikipedia/commons/2/2b/Jupiter_and_its_shrunken_Great_Red_Spot.jpg

http://upload.wikimedia.org/wikipedia/commons/thumb/5/58/Chromatic_aberration_3.svg/2000px-Chromatic_aberration_3.svg.png

http://upload.wikimedia.org/wikipedia/commons/5/56/The_Whirlpool_Galaxy_%28M51%29.jpg

http://hubblesite.org/newscenter/archive/releases/2005/12/image/a/