Tim; I am using an Orion SSAG with the Orion XY stage. I will take a look at scope stuff but I don't think they sell what I need. I want to remove the entire focuser and extend or replace the tube. This will also require a back-end plate with a T-thread. Jim ---- Tim Jones <tjmac@xxxxxxxxxxxxxx> wrote: > Jim > > What type of guide camera will you be using? I use an old Meade DSI-IC with > my ST80 and I combine a pair of T-thread extenders from Scopestuff to get > proper back focus. Because these are threaded (including the camera nose), > the interconnects are rock solid and stable. > > http://scopestuff.com/ss_ttet.htm > > The 1.25" nose is removed from the DSI and 2, 2" tubes are screwed into the > nose of the camera. The eyepiece holder for the ST80 is removed and that > will expose the T-threads on the scope end. Once screwed together, the > entire visual train is very stable. > > HTH, > Tim > > On Jun 26, 2012, at 4:43 PM, <james.t.waters@xxxxxxx> > <james.t.waters@xxxxxxx> wrote: > > > I have an Orion ShortTube 80mm scope that I am using for auto-guiding. I > > would like to eliminate some weight and differential flexure by removing > > the focuser. To do this I will have to extend the tube an additional 5”. > > Total tube length would then be about 10 1/2". The Orion tube has an > > approximate ID of 86mm or 3 3/8”. > > > > It looks like everything comes from China. Does anybody know where I can > > obtain this type of tubing? > > -- > See message header for info on list archives or unsubscribing, and please > send personal replies to the author, not the list. > -- See message header for info on list archives or unsubscribing, and please send personal replies to the author, not the list.