Hey there!
I wanted to try out an OAG with my 585mm and the SV555. Yes I know no need for OAG with this focal length but since I have to carry everything up a ladder to the roof I figured smaller would help
My problem now is that I had to put a spacer between the EFW and the 585 to achieve focus with the OAG and the guide cam
10mm
Now the 585 isn’t screwed into the OAG anymore and has more distance to the filters
Thanks
Florian