The Etna Astros Astronomy Club

Solar Page


This is the latest image from the SOHO satellite. Yes indeed! This is an up-to-date image of our sun in H-Alpha fed directly from NASA! (304 Angstroms)

If you have special (expensive!) equipment, you can actually see this from your home. Expect to spend about $6,000.

(Extreme ultraviolet Imaging Telescope: 284 Angstroms) images the solar atmosphere at several wavelengths, and therefore, shows solar material at different temperatures. In the images taken at 304 Angstroms the bright material is at 60,000 to 80,000 degrees Kelvin. In those taken at 171, at 1 million degrees. 195 Angstrom images correspond to about 1.5 million Kelvin. 284 Angstrom, to 2 million degrees. The hotter the temperature, the higher you look in the solar atmosphere.

This image shows the magnetic interaction of sunspots (if any are present).

For current solar activity visit

White light image from SOHO showing sunspot detail (if any).

Be sure to visit our gallery of solar images. All images taken by our members!
SOLAR TSUNAMI: When sunspot 930 exploded on Dec. 6th, producing an X6-category flare, it also created a tsunami-like shock wave that rolled across the face of the sun, wiping out filaments and other structures in its path. An H-alpha telescope in New Mexico operated by the National Solar Observatory (NSO) recorded the action.
"These large scale blast waves occur infrequently, however, are very powerful," says Dr. K. S. Balasubramaniam of the National Solar Observatory. "They quickly propagate in a matter of minutes covering the whole sun and apparently sweeping away filamentary material." Researchers are unsure whether the filaments were blown off or were compressed so they were temporarily invisible. Get the full story from the NSO.

This image is of the far side of the sun. The image is made using sonar
and can reasonably predict sunspots on the far side of the sun.
If a condensed, dark area remains for a few consecutive days it is likely a sunspot.


Look at this amazing image from HINODE!!!! Well worth the download time.


Image from HINODE