What's your favorite solar color? (September 5, 2003)
Hi-resolution TIF image (4.7M)
These four images of this composite Sun were taken on September 2,
2003 within 15 minutes of each other. Every day SOHO views the solar
atmosphere at several wavelengths of extreme ultraviolet light in
order to reveal the structure and activity of solar material at
different temperatures. Clockwise these are:|
Different features are viewed at different wavelengths. We want the differentiation in temperature so we can understand the flow of energy among features in the solar atmosphere, and what kinds of energy (thermal, mechanical, electromagnetic) are involved in creating, sustaining, and destroying the features. The brighter areas usually indicate a higher density of material, and thus, greater magnetic activity. All the images are digital, and record only the intensity of the light in the given bandpass. The colors are used for quick identification and to remind people that EUV radiation, like visible light, is composed of a variety of wavelengths -- colors -- that can tell us different things.
You can see some of the educational and outreach materials we have at the SOHO Classroom
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SOHO began its Weekly Pick some time after sending a weekly image or video clip to the American Museum of Natural History (Rose Center) in New York City. There, the SOHO Weekly Pick is displayed with some annotations on a large plasma display.
If your institution would also like to receive the same Weekly Pick from us for display (usually in Photoshop or QuickTime format), please send your inquiry to email@example.com.