Date: 29 April 2007 U.T.
Time: 15:50 - 16:20 U.T.
Telescope: 102mm SCT
Magnification: 90x
Filter: Baader Solar Filter (Objective)
Seeing: Fair
Transparency: Thin (Cirrus) Clouds
Temperature: +71 F (+22 C)
The above sketch shows the same sunspot that was observed two days earlier. North is up. Preceding is to the left (mirror reversed image).
A comparison of the this sketch with the previous sketch will give an idea of how quickly the appearance of a sunspot can change. Even during the thirty minute's it took to make this observation minor changes could be noticed.
29 April 2007
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