Ken, Also, remember that the two scopes don’t need to be aligned and in fact, sometimes must be unaligned to find a good guide star. I’ve actually had my configuration more than 5º off the primary scope’s axis. As long as there’s no flex between the two scope bodies, you’re good. Tim On Sep 4, 2014, at 7:36 PM, KenGSikes <kengsikes@xxxxxxx> wrote: > Jim, > > Thanks for the reply, I have a short tube 80 (Celestron make) and have a > problem keeping the scope in alignment with the main cope. I am hoping that > the longer tube and longer spacing of the rings will keep better alignment. -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.