H alpha sun (12:56 UT)
Taken by Sylvain Weiller on October 13, 2024 @
Jerusalem, Israel
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2024:10:13 18:47:42
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Details:
Impressive sun spots!
Fluorite 102/900, Coronado 90mm BF 30, Player-One Saturne SQR camera.
There is even space around the Sun with this big camera :)
Procedure to see the disk and the prominences ...
With Gimp fusion of pic1 for the disk, pic2 for prominences being pic1 plus gamma. Open pic2, open as layer pic1. Add alpha channel to pic1. Add Layer Mask to pic1 [white, add]. Tools Ellipse Select, Aspect ratio 1:1. Adjust its size and position to match the edges of the disk precisely. Edit, Fill with white. Invert selection. Fill the outside area with black.
Select, None to see result!
Photographer's website:
No URL provided.
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