Details
Orion 254mm f/4.7 Reflector Telescope OTA
Responding to your requests, we are pleased to offer the Orioin 254mm f/4.7 Reflector Telescope Optical Tube assembly (OTA) for folks who already have an equatorial mount. This optical tube assembly includes parabolic mirror optics, upgraded 2" Crayford-style focuser, telescope eyepiece holder, quick-collimation cap, dust cap, and dovetail base for finder scope. Aperture: 254mm (10.0"). Focal length: 1200mm (f/4.7). Has a 2" Crayford-style focuser with 2" and 1.25" telescope eyepiece holders. Recommended for visual use or astrophotography. Includes prime-focus camera adapter. Weighs 27.2 lbs. Tube rings, tube ring mounting plate, finder scope, and eyepieces sold separately.
- 254mm (10") aperture and 1200mm focal length reflector telescope optical tube provides vivid, close views of deep-sky and solar system objects
- Includes 2" Crayford focuser for smooth, backlash-free focus adjustment
- Recommended for visual or astrophotographic use
- Weighs 27.2 pounds
- Optical tube only, does not include tube rings, mount, or tripod - which can be purchased separately
Additional Information
| Manufacturer | Orion |
|---|---|
| Model | 09959 |
| Focal Length | 1200mm |
| Focal Ratio | f/4.7 |
| Focuser | 2" Crayford |
| Highest Useful Magnification | 300x |
| Included Accessories | Collimation cap |
| Limiting Stellar Magnitude | 14.7 |
| Lowest Useful Magnification | 34x |
| Optical Tube | Steel |
| Optical Tube Length | 47.2 in. |
| Optical Tube Weight | 27.2 lbs. |
| Secondary Mirror Obstruction | 63mm |
| Secondary Mirror Obstruction by Area | 6% |
| Secondary Mirror Obstruction by Diameter | 25% |
