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-Chrétien 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 RC6 comes with a 2" dual-speed 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 knife edge baffles to diminish contrast reducing stray light, improving the instrument in both visual and imaging uses. A RC6 model comes with a Vixen style dovetail plates. Manuals: Photron RC telescope operation manual Electric focuser installation and operation manual Specifications Optical Design Ritchey-Chretien Clear Aperture 150mm Focal Length 1370mm Focal Ratio f/9 Resolving Power 0.76 arc seconds Limiting Magnitude 13.6 Highest Useful Magnification 180X Secondary Mirror Size 67mm Focuser 10:1 Crayford dual-speed Focuser size 2" Dovetail Bar Vixen-style Finder scope Base Yes Finder scope Optional Tube material Steel Tube Length 19.1" Tube Weight 12 lbs Other Accessories 2" to 1.25" compression ring adapter; 1" long extension tube X2 2" long extension tube X1 Gross Weight 18 lbs Warranty One year limited
