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Note: This is an optical tube only designed for advanced astroimaging.
Description
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 2" 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. 
- Coma free, chromatic aberration-free, spherical aberration-free optics
 - 250mm (10") optical aperture
 - 2000mm focal length
 - f/8 focal ratio
 - Fixed primary
 - Low thermal expansion quartz mirrors
 - Multiple Knife-Edge Baffle System
 - 3.3" Dual-dpeed Crayford focuser
 - Finder scope base and two dovetails bars
 - Optional finder scope, diagonal and 1.25" eyepiece
 - Optional iOptron Electronic Focuser (#8451)
 - OTA w/3" dual-speed Crayford focuser
 - 2X25mm, 1X 50mm focus extention
 - 1.25" accessory adapter
 - Top and bottom Losmandy dovetail bars
 
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 | 
| Finderscope 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 | 
            


