Experimenting with Ca-K filter and ASI224MC

Three groups of sunspots are visible on the sun : AR2866, AR2863 and AR2864. My objective was to experiment with the Baader Ca-K filter and ASI224MC camera and this on the TAL200K f/8.5 telescoop equiped with solarfilter ND3.8.

I used capture software ASIstudio and focussing went easier then expected. The Ca-K filter shows much more details around the sunspots. Stacking was done using AutoStakkert! and editing using CS4.

Top :Left Visual - Right Ca-K Filter
Bottum : Left Visual ASI224MC - Right Ca-K ASI224MC