Although it's the solar minimum, the sun is currently very active. Here is a large sunspot group visible on 25 July 2004, which also caused considerable aurora activity.
Although the group was said to be visible to the naked eye (taking suitable precautions), we couldn't see it through eclipse spectacles. But a ceiling projection through the telescope clearly showed the complex structure and penumbral regions.
Image detailsPhotographer: Chris
Taken: Leeds UK, 5:19:31pm Sun 25 Jul 2004
Original format: 3072 x 2048 JPEG, 1274 Kbytes
Camera: Canon EOS 10D
Exposure: 1/90 sec * ISO100 * f5.60
Photodesk processing: Scaling, cropping, gamma, colour balance
EXIF data produced by EXIFinfo
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