CaK filaments/ filaprom from 20th Nov 2021
- Merlin66
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CaK filaments/ filaprom from 20th Nov 2021
My usual DIY CaK filter has a bandwidth of 1A just to the blue side of the CaK CWL.
The images today are as usual - reasonable seeing, spots visible etc. A MiniSHG CaK image has a bandwidth around 0.2A ( ) and can be placed exactly on the CaK CWL. The MiniSHG shows the extensive wispy filaments (around 7 o'clock) and a filaprom (around 1 o'clock)
On this occasion the MiniSHG came out best!!!
A couple of close up CaK DIY filter images: I'd be interested to see some other CaK images from the Lunt filter for comparison.
The images today are as usual - reasonable seeing, spots visible etc. A MiniSHG CaK image has a bandwidth around 0.2A ( ) and can be placed exactly on the CaK CWL. The MiniSHG shows the extensive wispy filaments (around 7 o'clock) and a filaprom (around 1 o'clock)
On this occasion the MiniSHG came out best!!!
A couple of close up CaK DIY filter images: I'd be interested to see some other CaK images from the Lunt filter for comparison.
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Re: CaK filaments/ filaprom from 20th Nov 2021
WoW, that SHG does really well. I have seen prominences before in Calcium II K images but I don't ever recall seeing filaments. Nice work!!
James
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Re: CaK filaments/ filaprom from 20th Nov 2021
These are really excellent images Ken and of course you are at the best-end of the Solar-viewing year, but superb images showing so much detail.
I would lend you my Lunt CaK filter, but you are a tad too far away and up here the Sun is slipping lower and closer to the horizon for me to get a decent comparison to you via S.C. (which would be much cheaper than air-travel etc.).
Thanks for sharing
Terry
I would lend you my Lunt CaK filter, but you are a tad too far away and up here the Sun is slipping lower and closer to the horizon for me to get a decent comparison to you via S.C. (which would be much cheaper than air-travel etc.).
Thanks for sharing
Terry
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Re: CaK filaments/ filaprom from 20th Nov 2021
I just wish I had a CaK filter to begin with. I would certainly image with it from time to time but I would use it visually with a monitor, of course.
JP
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Re: CaK filaments/ filaprom from 20th Nov 2021
Hi
Great image with the miniSHG.
Eds Sills is giing one away in the UK, as I recall being told if anyone is interested, big project.
Cheers. Andrew.
Great image with the miniSHG.
Eds Sills is giing one away in the UK, as I recall being told if anyone is interested, big project.
Cheers. Andrew.
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Re: CaK filaments/ filaprom from 20th Nov 2021
Ken, here is a Cak image taken with my Lunt module on the 19th. there was a lot of filament activity on that day that I captured in Ha, they were not visible in Cak.
Your mini SHG is getting amazing results ,well done
Martin.
Your mini SHG is getting amazing results ,well done
Martin.
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- marktownley
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Re: CaK filaments/ filaprom from 20th Nov 2021
Very nice images Ken, but particularly with the mini SHG.
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Re: CaK filaments/ filaprom from 20th Nov 2021
Great to see your miniSHG is showing filaments in CaK.
John
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Re: CaK filaments/ filaprom from 20th Nov 2021
Superb SHG results, Ken. It just shows what we're missing with regular CaK filters.
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Re: CaK filaments/ filaprom from 20th Nov 2021
Wow!! wow and wow!!! these are the best Ken
Alexandra
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