CaK activity 25Jan 2022
- Merlin66
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CaK activity 25Jan 2022
Using the Vixen 90/1000 with the DIY CaK filter (1A bandwidth). Some issues with the internal tilt need to be addressed.
Prom Images from stacks of 200 from 500 slightly sharpened.
Exposures were typically 40-60ms, a total of 10sec.
(For comparison the previous CaK I showed from the MiniSHG took only 0.004 sec - the benefit of a very narrowband centred on the activity.)
The southern zone dominated by the large sunspot AR 2934.
The northern zone has a new AR just coming into view - complex with at least two larger spots. The mid zone shows the small group AR 2935?
Some very nice proms around!!!
Enjoy.
Prom Images from stacks of 200 from 500 slightly sharpened.
Exposures were typically 40-60ms, a total of 10sec.
(For comparison the previous CaK I showed from the MiniSHG took only 0.004 sec - the benefit of a very narrowband centred on the activity.)
The southern zone dominated by the large sunspot AR 2934.
The northern zone has a new AR just coming into view - complex with at least two larger spots. The mid zone shows the small group AR 2935?
Some very nice proms around!!!
Enjoy.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
- eroel
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Re: CaK activity 25Jan 2022
These are great Ken!
http://brierleyhillsolar.blogspot.co.uk/
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- Merlin66
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Re: CaK activity 25Jan 2022
Thanks to everyone, appreciate the feedback!
Going back to the 90mm f11 for the CaK gives better resolution (in my very average conditions) but the MiniSHG is much quicker for the run of the mill full disks and proms albeit at a smaller scale.
Going back to the 90mm f11 for the CaK gives better resolution (in my very average conditions) but the MiniSHG is much quicker for the run of the mill full disks and proms albeit at a smaller scale.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
- Jordan Konisky
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Re: CaK activity 25Jan 2022
Great set of images, especially those proms.
Jordan -
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Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
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SkyWatcher ED100 Refractor with Diamond Steeltrack Crawford Focuser
Celestron CG4 Equatorial Mount
Daystar Quark H-Alpha Chromosphere
Lunt CaK B1800 Filter Module
Lunt White Light Solar Wedge
ZWO ASI174MM, ZWOASI1600MM Cameras
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Re: CaK activity 25Jan 2022
fantastic CaK images Ken, well done
Pedro Re'
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- DeepSolar64
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Re: CaK activity 25Jan 2022
Awesome work Ken! The CaK proms show quite a bit of detail and are not just vague ghostly fuzzies.
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Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
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Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "