NASA's EIT (Extreme ultraviolet Imaging Telescope) records solar material at different wavelengths/temperatures. The images themselves are pretty beautiful and come in different resolutions. With a little photoshopping they make very nice desktop images.
NASA EIT Main Page
**on 9-13-06, they are doing a periodic 'ccd bakeout', which is a fancy term for heating the CCD to evaporate residual water vapor from the CCD components to reduce signal noise and interference.
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