Please Note: A finder scope, diagonal and eyepiece are not included in the OTA package and must be purchased separately if desired. The iOptron® Photron™ Ritchey-Chretien design telescopes, feature low thermal expansion quartz primary and secondary mirrors with ninety-nine percent reflective dielectric coatings. The RC optical design delivers coma, spherical and chromatic aberration free results, perfect for color or monochrome imaging. A fixed position primary mirror eliminates image shift that occurs from focusing with other telescope designs. The iOptron RC10 comes with a 3" dual-speed linear-bearing Crayford focuser. Three focuser extension rings are provided for a "flex-free" solid extension as a means to take up any unneeded back focus. Its steel tube is equipped with 10 knife edge baffles to diminish contrast reducing stray light, improving the instrument in both visual and imaging uses. A RC10 model comes with top and bottom dovetail plates adding rigidity to the tube while providing attachment points for the mount and other accessories to be used. Manuals: Photron RC telescope operation manual Electric focuser installation and operation manual Specifications Optical Design Ritchey-Chretien Clear Aperture 250mm Focal Length 2000mm Focal Ratio f/8 Resolving Power 0.46 arc seconds Limiting Magnitude 14.7 Highest Useful Magnification 295X Secondary Mirror Size 110mm in diameter Focuser 10:1 Crayford dual-speed Focuser size 3.3" Dovetail Bar Losmandy-style Mounting Bar (Top) Losmandy-style Finder scope Base Yes Finder scope Optional Tube material Steel Tube Length 28.4" Tube Weight 35 lbs OTA Primary Mirror Cooling Fan Yes (three built-in fan, with battery holder) Other Accessories 2" to 1.25" compression ring adapter; 1" long extension tube X2 2" long extension tube X1 Gross Weight 48 lbs Warranty One year limited
