Three Calcium-K solar images March 27 2026

Dataset consists of 3 Calcium images. Calcium K is found at 393.4Å and shows magnetic plage activity in the Sun's photosphere and lower chromosphere. I used a TEC160FL APO stopped down to 120mm, a Baader 4x telecentric and a Solar Spectrum K-line narrowband 0.5Å Calcium K etalon. 2 are surface images showing active regions and one is a limb showing spicules and some active region activity. Seeing 5/5. Dataset include 3 stacked TIFs . Try stretching the blue and red curves up to get a nice shade of violet in the final image.