9b 9c, Optical Axis Adjustment, Star Testing

Contents Orion Ritchey-Chrétien Astrographs #8956 6 f/9 Ritchey-Chrétien Optical Tube Assembly#8958 8 f/8 Ritchey-Chrétien Optical Tube Assembly i n s t r u c t i o n M a n u a lSetting Up Your Telescope Parts ListUnpacking Your Telescope Figures 2a-d Unpacking the Optical Tube 2a 2b 2c 2dGrip-ring Focuser body Figure 3 Removing the focuser Page Inserting an Eyepiece Focusing the TelescopeAttaching a Finder Scope Inserting a Star DiagonalImage Orientation Collimating the Ritchey‑ChrétienUsing the Collimating Eyepiece Secondary AdjustmentStar Testing Optical Axis Adjustment9b 9c 8 f/8 Ritchey-Chrétien Care and Cleaning of the OpticsSpecificationsSpecifications 6 f/9 Ritchey-ChrétienCustomer Support Help Line Orion Telescopes & BinocularsOne-Year Limited Warranty OrionTelescopes.com