On Oct 27, 2020, at 7:46 PM, Michael Barsotti <Barsottimm@...> wrote:

?Dave,

You will get a more accurate alignment if you use a illuminated reticle eye piece in your you main focuser. ?The finder will get you near your target but not precisely centered on it. ?Your alignment needs to be centered on the main focus tube not on the finder scope. ?Using this method, my go to accuracy of my ServoCAT has been excellent and if my target is not in the FOV, a nearby search will usually find it. ?I have considered replacing my 9 x 50 RACI with something bigger, but if I can get near my target, when I use my 13mm Ethos i now have a finder that is using my 15” mirror, in your case a 20” mirror, and not 50 or 80mm mirror.

Mike