Re:Orion Optics OD250L or OD250S Help please! › Forums › General Discussion › Orion Optics OD250L or OD250S Help please! › Re:Orion Optics OD250L or OD250S Help please! 8 April 2010 at 12:12 pm #575254 Dominic Ford (site admin)Participant Posted by Andrea Tasselli at 12:12 on 2010 Apr 08 Get the shorter focal length one, much easier to use in dob configuration and less subject to wind buffeting. I know as I have the f/6.3 OTA.Andrea T.
