Hi,
Here are some images taken on September 7 with the double-stack 0.14 A setup :
A nice prominence :
http://astrosurf.com/viladrich/astro/so ... CaK-DS.jpg
A filament (upper left of the image) :
http://astrosurf.com/viladrich/astro/so ... -014nm.jpg
A group of small spots :
http://astrosurf.com/viladrich/astro/so ... -014nm.jpg
Clear skies !
Christian
Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
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christian viladrich
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Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Christian Viladrich
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Awesome Christian, especially the limb prominence image!
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Stunning.
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Oh my!! the CaK prom is quite exceptional 
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Amazing images Christian!
Thanks for sharing!
Thanks for sharing!
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Great images, the limb shot is fantastic. With the Lunt DS i have trouble to do this.
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
These are excellent Christian, looks like you're getting nice fast exposure time too.
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Excellent Christian! That limb shot is mesmerizing!
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Very pretty prominence photo Christian.
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Stunning work, Christian!!
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christian viladrich
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Thansk to all !
Dennis, I was lucky to have a very bright prominence. So it might be possible to do the same with a DS Lunt Ca K. Still with longer exposure time.
Mark, indeed the high peak transmission of the Alluxa filters (> 80%) makes the difference for keeping exposure short and freeze turbulence.
Dennis, I was lucky to have a very bright prominence. So it might be possible to do the same with a DS Lunt Ca K. Still with longer exposure time.
Mark, indeed the high peak transmission of the Alluxa filters (> 80%) makes the difference for keeping exposure short and freeze turbulence.
Christian Viladrich
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Magnificent images, Christian, thank you sharing them.
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Re: Ca K double-stack prom / filament / spots on Sept 7 with the TOA 150
Phenomenal images, Christian.
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More images at http://www.flickr.com/photos/solarcarbon60/