Dear friends,
It cleared just long enough in the afternoon for a set of FD in H-Alpha and CaK.
FD image in H-Alpha using a Takahashi Sky-90II with Coronado 90mm/BF15, Coronado 2x CeMax and ASI 1600mm PRO.
Sun FD in H-Alpha 25th of August 2021
Huge faint prom on the SE limb
Sun FD in H-Alpha 25th of August 2021 - prominence inverse
FD image in CaK using a William Optics ZenithStar 61II stopped down to 46mm, Lunt CaK 1200 module, Coronado 2x CeMax and ASI 183mm camera.
Sun FD in CaK 25th of August 2021
Sun FD in CaK 25th of August 2021 - colorized
As usual click on links to view full size images.
Thanks and best regards,
Arne
Sun in H-Alpha and CaK 25th of August 2021
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Re: Sun in H-Alpha and CaK 25th of August 2021
WOW!! look at that huge prom!! and the AR in the SE is coming along at amazing speed
Alexandra
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Re: Sun in H-Alpha and CaK 25th of August 2021
Thanks Arne for sharing the images and with both the far north and far south proms is quite unusual.
Cheers
Terry
Cheers
Terry
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Re: Sun in H-Alpha and CaK 25th of August 2021
Thanks for the kind comments, Alexandra, Maurits and Terry.
Best regards,
Arne
Best regards,
Arne
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Re: Sun in H-Alpha and CaK 25th of August 2021
Nice work, Arne. The second photo is very original.
Ivan
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