I made myself a solar filter last saturday for my 90mm refractor. Couldnt resist looking at the sun, but I became completely confused about focussing the eyepiece. Tried different eyepieces, but all I saw was a lovely white disc which looked pretty well the same wherever the EP was focussed. Is there a technique to focussing? as there is no detail to see? I ended up waiting for night and then focussing on a star - and that's where the EP stays!!
