Orion 10" f/8 Ritchey Chretien Reflecting OTA Telescope
ITEM #
OR-08266
Sale
Orion 10" f/8 Ritchey Chretien Reflecting OTA Telescope
- 10" (250mm) aperture, f/8 Ritchey-Chretien optical tube optimized for astrophotographic use with APS-C and full-frame (35mm) CCD cameras and DSLRs
- Features a big 3.3" rotatable dual-speed (10:1) Crayford focuser equipped with a sturdy linear-bearing to provide fine focus adjustment without slippage or flexure with heavy imaging accessories attached
- Hyperbolic primary and secondary mirrors made of low-expansion quartz glass with enhanced aluminum coatings boast 96% reflectivity for bright imaging performance, and the secondary mirror is precisely center-marked to aid in collimation
- Features two dovetail finder scope bases and a unique, Orion-exclusive slotted wide-format dovetail bar along the top of the telescope for easy attachment of imaging accessories
- Three built-in 1.5" cooling fans accelerate cooling of the primary mirror to reach thermal equilibrium quickly
Additional Information
Aperture250 mm (9.84")
Dawes Limit0.46 arcseconds
Focal Length2000 mm
Focal Ratiof/8
Hightest Magnification500x
Light Gathering Power1276x
Limiting Magnitude15.7
Optical DesignRitchey Chretien
Tube Length721mm
Tube Weight35.3 lbs
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