The Sun in Ca K-line light with a Seestar S50 in EQ mode, fitted with a Baader solar filter and a Baader Ca K-line filter. Stack of the best 40% of frames in a 4.5 minute RAW AVI. Stacked in Autostakkert! and processed in waveSharp and Gimp. Mono and colourised images.
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Seestar S50 fitted with a solar finder and a Baader solar filter/ Baader CaK filter holder
The Sun in Ca K-line light
Steve Wainwright and Nicola Mackin
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