A Wide field view of the areas of the Orion constellation known as Belt and Sword, shot using a 6nm H-Alpha filter.
On the right the Orion Nebula, on the left the Flame and Horse Head nebula :)

The photo is the sum of 3 x 60s, 4 x 300s and 24 x 600s exposures, done with the Canon EF 70-200 f/4 L mounted on an astronomic CCD camera.

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