Quite nice spring weather on Friday, so I could follow how the active groups develop. I started with CaK, and by the time I had the h-alpha scope out, the seeing had deteriorated a bit.
First a disk in h-alpha for overview (I forgot to shoot a disk in CaK...) and then a closer look at the active regions in both wavelengths:
Finally the big prom in h-alpha and in CaK:
Kind regards,
Frank
h-alpha and CaK, February 26th, 2021
- marktownley
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Re: h-alpha and CaK, February 26th, 2021
These are excellent FRank!
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
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