Sun FD in H-Alpha and CaK 21st of November 2021

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arnedanielsen
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Sun FD in H-Alpha and CaK 21st of November 2021

Post by arnedanielsen »

Dear friends,

Today's FD images in H-Alpha and CaK taken at a solar altitude of 10 degrees.

FD image in H-Alpha using a Coronado 60mm/BF15 w/Beloptik ITF, stopped down to 50mm, Baader 35nm H-Alpha and ASI 178mm mounted on a SkyWatcher SolarQuest.
Sun60FD_114212_Ha_20211121_ZWO ASI178MM(53096324)_lapl4_ap3733_out_Contrast_resize.jpg
Sun60FD_114212_Ha_20211121_ZWO ASI178MM(53096324)_lapl4_ap3733_out_Contrast_resize.jpg (314.68 KiB) Viewed 479 times
Sun FD in H-Alpha 21st of November 2021

Sun60FD_114212_Ha_20211121_ZWO ASI178MM(53096324)_lapl4_ap3733_out_Contrast_Colorized_resize.jpg
Sun60FD_114212_Ha_20211121_ZWO ASI178MM(53096324)_lapl4_ap3733_out_Contrast_Colorized_resize.jpg (344.21 KiB) Viewed 479 times
Sun FD in H-Alpha 21st of November 2021 - Colorized



Same setup as above, but using long exposure (15ms) to bring out the proms. Overexposed disc made black.
Sun60FD_114112_Ha_20211121_ZWO ASI178MM(53096324)_lapl4_ap40_out_Contrast_resize.jpg
Sun60FD_114112_Ha_20211121_ZWO ASI178MM(53096324)_lapl4_ap40_out_Contrast_resize.jpg (70.8 KiB) Viewed 479 times
Sun FD in H-Alpha 21st of November 2021 - Prominence


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 mounted on a SkyWatcher SolarQuest.
SunCaK60_114920_CaK_(3934nm)_20211121_ZWO ASI183MM_lapl4_ap7521_out_Contrast_resize.jpg
SunCaK60_114920_CaK_(3934nm)_20211121_ZWO ASI183MM_lapl4_ap7521_out_Contrast_resize.jpg (243.69 KiB) Viewed 479 times
Sun FD in CaK 21st of November 2021

SunCaK60_114920_CaK_(3934nm)_20211121_ZWO ASI183MM_lapl4_ap7521_out_Contrast_Colorized_resize.jpg
SunCaK60_114920_CaK_(3934nm)_20211121_ZWO ASI183MM_lapl4_ap7521_out_Contrast_Colorized_resize.jpg (263.59 KiB) Viewed 479 times
Sun FD in CaK 21st of November 2021 - Colorized



Click on links to view full size images.

Thanks for looking and best regards,
Arne


Best regards,
Arne
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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by EGRAY_OBSERVATORY »

Beautifully clear images Arne.

Thanks vm for sharing

Terry


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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by DeepSolar64 »

Arne,
These are very evenly illuminated discs and you did a wonderful job in getting both disc and prom details in the Ha images. The monochrome " ring of fire " looks great too!

Blessings:

James


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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by MapleRidge »

Superb FD images Arne, and nicely presented too :bow

Brian


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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by eroel »

Arne:
A super session, beautiful images.
Best wishes.
Eric.


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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by Montana »

Excellent set Arne, some beautiful details :bow :hamster: you did a much better job than me at capturing all the lovely proms :)

Alexandra


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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by Ivan »

Great job, Arne!

Ivan


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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by jacinto »

Nice picture Arne, I have a question, in CaK band, what exactly we are watching, for me it look like a flat Chomosphere image.

Jacinto


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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by marktownley »

These look really nice Arne!


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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by Montana »

Jacinto, a little information about CaK is a here http://www.stephenramsden.com/solarastr ... II%20K.pdf

Alexandra


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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by Carbon60 »

Excellent FDs, Arne. Nice and even, with lovely details.

Stu.


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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by arnedanielsen »

Thank you so much everyone for all your kind comments! Much appreciated!

Best regards,
Arne


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Arne
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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by MAURITS »

Lovely images Arne.


Regards,
Maurits

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Re: Sun FD in H-Alpha and CaK 21st of November 2021

Post by arnedanielsen »

Thank you very much, Maurits!

Best regards,
Arne


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