A spectroheliogram
Taken by Francois Rouviere on April 18, 2026 @
Cannes, France
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Details:
The seeing was good this morning to shoot this 2-image mosaic of the H alpha chromosphere, with AR4419 in the middle and a fine prominence on the eastern limb (left). 100 mm refractor with Sol'Ex spectroheliograph, 7h18 UT.
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