Sunday, September 27, 2009

The Sun is back!

It's a couple of years ago, since I observed a sun spot. Yesterday, I again observed the Sun using a baader astrosolar filter and I indeed noticed some spots on its surface (see photo). The Sun is back! Since the Sun has an activity period of 11 years and the count of sun spots are propotional to its activity, no spots are observable in low activity periods. That was the case in the last two years.
Warning: Do not observe the Sun without a special solar filter! The intensive sun light will seriously damage your eyes!

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