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SDO AIA 1700 Angstrom

AIA 1700 Å - Solar Region: Photosphere/Chromosphere
Ultraviolet light continuum, shows the surface of the sun. As well as a layer of the sun's atmosphere called the chromosphere, which lies just above the photosphere and is where the temperature begins rising and is typically colorized in a grainy pink. Temperatures: 4,500-5,000 Kelvin. Credit: NASA/SDO/Goddard
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How SDO Sees the Sun

The sun emits light in all colors, but since yellow is the brightest wavelength from the sun, that is the color we see with our naked eye. Specialized instruments can observe light far beyond the ranges visible to the naked eye. Different wavelengths convey information about different components of the sun's surface and atmosphere.

The Solar Dynamics Observatory, or SDO, images 10 different wavelengths, measured in angstroms (Å), with its Atmospheric Imaging Assembly (AIA) instrument. SDO’s Helioseismic and Magnetic Imager (HMI) instrument focuses on the movement and magnetic properties of the sun's surface and provides 3 additional images.

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Page Last Updated: August 4th, 2014
Page Editor: Holly Zell