For Your Astronomers: NASA Collage Of The Sun At Various Wavelengths [2048 x 2048]

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http://www.nasa.gov/images/content/719590main_Grid-Sun-orig_full.jpg

 

Link: NASA - Sun Primer: Why NASA Scientists Observe the Sun in Different Wavelengths

 

http://www.nasa.gov/images/content/717606main_Sun-Wavelength-670.jpg

 

This image on the original website [click image] has mouse over hotspots which, when active, show more detail about the image under the cursor.