Solar Minimum

Solar Minimum

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The sun goes through a periodic 11 year cycle of increasing and decreasing solar activity. This full disk image of the sun in the light of 0.7 angstrom hydrogen alpha was taken during solar minimum with the solar disk relatively smooth and activity free.

Date Imaged       :

March 16, 2008

Lens       :

Borg 77ED f/6.5

Camera       :

Atik 16HR

Exposure       :

0.001 sec

Filter       :

Coronado SM60

Mount       :

AP 600

Location       :

Stardust Observatory, Baguio, Philippines