Testing some filters with the MiniSHG....
On CWL (K3) (3933.7A) the plage and chromospheric network shows well and also the very large filament down south.
Moving towards the violet (K2v) and the filament is still visible.
When moved to the red side (K2r) the filaments fade and the brightness of the active areas is enhanced .
CaK and very large filament 5th Dec 21
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CaK and very large filament 5th Dec 21
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Re: CaK and very large filament 5th Dec 21
A couple of prominences are visible on the first and last image too!
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Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
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Re: CaK and very large filament 5th Dec 21
Great t see your CaK capture Ken, and the prom looks good
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Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
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Re: CaK and very large filament 5th Dec 21
Stunning images Ken, that SHG is the business. The images you have been posting CaK are a reference. They've certainly been giving me some ideas for tweaking my CaK filter for next year. I know I can't get the tight bandpass of the SHG, but I think there may be gains to be had on my filter system yet.
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Re: CaK and very large filament 5th Dec 21
Wow!! look at that filament!! I've not seen the Sun for a while so I am a bit behind, looks like this weekend the Sun was a stunner
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Re: CaK and very large filament 5th Dec 21
Fantastic images Ken, thanks for sharing
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Re: CaK and very large filament 5th Dec 21
Great images there, Ken.
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Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/