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/crash...


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_...
http://en.wikipedia.org/wiki/Human_ey...
http://en.wikipedia.org/wiki/Refracti...
http://commons.wikimedia.org/wiki/Fil...
http://www.eso.org/public/images/yb_v...
http://en.wikipedia.org/wiki/Jupiter#...
http://en.wikipedia.org/wiki/Wide_Fie...
http://commons.wikimedia.org/wiki/Fil...
http://commons.wikimedia.org/wiki/Fil...
   • NASA Star Party Helps Celebrate Inaug...  
http://en.wikipedia.org/wiki/William_...
http://commons.wikimedia.org/wiki/Fil...
http://commons.wikimedia.org/wiki/Fil...
   • Beyond the Visible: The Story of the ...  
http://pprc.qmul.ac.uk/~still/wordpre...
http://en.wikipedia.org/wiki/VERITAS#...
http://en.wikipedia.org/wiki/Astropho...
http://en.wikipedia.org/wiki/Astropho...
http://en.wikipedia.org/wiki/File:PIA...
http://en.wikipedia.org/wiki/File:NAS...
http://upload.wikimedia.org/wikipedia...
http://upload.wikimedia.org/wikipedia...
http://upload.wikimedia.org/wikipedia...
http://hubblesite.org/newscenter/arch...