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sun types

DATA is from SOHO and SDO

The extreme UV images are taken of the Solar Transition region and Inner Corona.
The wavelengths chosen enable seeing certain elements in specific forms.

The colors chosen Have nothing to do with reality!!!

SDO / AIA 1600  -  1600Å           6,000 K     C IV and continuum
SDO / AIA 1700  -  1700Å           6,000 K     Continuum
SDO / AIA 304    -    304Å         50,000 K     He II
SDO / AIA 171    -    171Å    1,000,000 K     Fe IX
SDO / AIA 193    -    193Å    1,250,000 K     Fe XII
SDO / AIA 211    -    211Å    2,000,000 K     Fe XIV
SDO / AIA 335    -    335Å    2,800,000 K     Fe XVI
SDO / AIA 94      -      94Å    6,000,000 K     Fe XVIII
SDO / AIA 131    -    131Å  10,000,000 K    Fe VIII, Fe XXI

SDO / AIA 211 + 193 + 171 - A combination - 211=Red,  193=Green, 171=Blue

Magnetogram - Magnetic fields - White=North/Outward  Black=South/Inward
Continuous - about what you would see (don't look without proper eye protection!)
X-Ray - High energy - taken from GOES-15

Thanks to: http://meyerweb.com/eric/css/edge/popups/demo2.html