This morning the sky was cloudfree so time to try out the baader filter CaIIK and Solar Continuum filters.
For the try out I used my TAL200K f/8.5 scope with Nikon D7500. Unfortunately I was not able to get the sun into focus. With only a few mm too short. So the pictures are not in focus and can not be used as a reference. After putting all material back in place I found a solution for a next trial and also collegue Walter provided a solid solution to overcome a couple of mm backfocus.
Beside the focus issue, the CaII K picture is too dark. Total exposure time is about 25s. This is due to the use of a Solar filter ND5. Next try out I will be using my new solar filter ND3.8.
