Omegon Advanced N 254/1250 Dobsonian Telescope
Designed for larger-aperture visual observation, the Omegon Advanced N 254/1250 Dobsonian Telescope combines a 254mm parabolic mirror with 1250mm focal length and wooden Dobsonian mounting.
- 254mm aperture provides 0.46-arcsecond resolution
- 1250mm focal length uses f/4.9 optics
- 2-inch Crayford focuser supports accessories
- 25mm and 10mm eyepieces included
- 8×50 finder and rocker base included
- Side altitude clutches support manual movement
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Description
Resolve individual stars in dense globular clusters with the Omegon Advanced N 254/1250 Dobsonian Telescope 10-inch parabolic Newtonian reflector system. Designed in Germany, this fast f/4.9 telescope features a 254mm (10.00 inches) aperture and a 1250mm focal length. The Omegon Advanced N 254/1250 delivers 0.46 arcsecond Dawes resolving power and reaches magnitude 13.8.
The Omegon Advanced N 254/1250 Dobsonian Telescope utilizes a 10-inch BK7 optical glass parabolic primary mirror finished with multi-layer aluminum coatings and a protective silicon dioxide top coat. Its roll-formed heavy-gauge steel cylinder shell features cast aluminum cell framework end rings and rear collimation retention screws. Paired with a wooden rocker box base, the full assembly weighs 26.30 kg (57.98 lbs), while the 300mm by 1210mm optical tube weighs 14.10 kg.
Key Features of Omegon Advanced N 254/1250 Dobsonian Telescope
Engineered for deep galactic exploration, this Omegon Advanced N 254/1250 Dobsonian telescope maximizes photon capture with its 10-inch parabolic objective. Its fast f/4.9 optical speed and smooth 2-inch Crayford focuser reveal subtle spiral arms in galaxies and fine planetary nebula structures.
- 254mm (10.00 inches) aperture with 1250mm focal length and fast f/4.9 optical speed
- Precision parabolic primary mirror substrate crafted from BK7 optical glass
- High-reflectivity multi-layer aluminum coatings with silicon dioxide top coat
- 58mm planar secondary mirror obstruction (22.83% diameter, 5.21% area)
- 2-inch Crayford precision friction drive focuser with step-down 1.25-inch adapter
- Wooden Dobsonian rocker box base with cast altitude tension hubs
- High-aperture 8×50 optical crosshair finder scope fixed on base shoe
- Side altitude clamping brackets and integrated eyepiece storage tray
10-Inch Parabolic Optics & 2-Inch Crayford Focuser
The massive 254mm primary mirror provides substantial light grasp, pulling out faint deep-sky structures with ease. Equipped with a backlash-free 2-inch Crayford focuser and 1.25-inch adapter, this Omegon 10-inch Dobsonian supports useful magnifications from 36x up to 500x.
Rocker Box Base & 8×50 Optical Finder Scope
Smooth manual tracking is critical when observing deep-space objects at high power. The Omegon Advanced N 254/1250 sits on a sturdy wooden rocker box with side altitude hubs, ensuring effortless azimuth and altitude panning. Paired with an 8×50 optical finder, astronomers can quickly target and track deep-sky objects.
- Sturdy wooden Dobsonian rocker box with side-mounted altitude tension hubs
- 8×50 optical crosshair finder scope for locating low-intensity astronomical targets
- Plossl 25mm and Plossl 10mm eyepieces with side eyepiece storage tray extension
Omegon Advanced N 254/1250 Warranty
The Omegon Advanced N 254/1250 Dobsonian Telescope includes a 2-year limited warranty against material and manufacturing defects. The factory shipment package contains the 254mm parabolic Newtonian optical tube assembly, wooden rocker box base, side altitude clamping brackets, eyepiece storage tray extension, 8×50 finder scope, and two 1.25-inch Plossl eyepieces.
Omegon Advanced N 254/1250 Dobsonian Telescope Specs
| Brand | Omegon |
| Full Model Code | Omegon Advanced N 254/1250 Parabolic Newtonian Reflector Dobsonian Base Mount System |
| Country of Origin | Germany (Designed) / China (Manufactured) |
| Optical Design | Newtonian Reflector (Parabolic Primary Mirror Layout with Planar Secondary Mirror) |
| Aperture | 254 mm (10.00 inches) |
| Focal Length | 1250 mm |
| Focal Ratio | f/4.9 |
| Optical Coatings | High-Reflectivity Multi-Layer Aluminum Coating Matrix with Protective Silicon Dioxide Top Coat |
| Glass Material | Standard BK7 Optical Glass Substrates |
| Secondary Mirror Obstruction | 58 mm |
| Secondary Mirror Obstruction by Diameter | 22.83% |
| Secondary Mirror Obstruction by Area | 5.21% |
| Resolving Power | 0.46 Arcseconds (Dawes), 0.54 Arcseconds (Rayleigh) |
| Limiting Visual Magnitude | 13.8 |
| Highest Useful Magnification | 500x |
| Lowest Useful Magnification | 36x |
| Optical Tube Material | Roll-Formed Heavy-Gauge Steel Cylinder Shell with Cast Aluminum Cell Framework End Rings |
| Focuser Style & Mechanism | 2-inch Crayford Precision Friction Drive Focuser Assembly with Step-Down 1.25-inch Adapter Collar |
| Mirror Lock Mechanism | Yes (Rear Secondary Pull-and-Push Manual Collimation Retention Screws on Mirror Base) |
| Optical Tube Dimensions | 300 mm x 1210 mm |
| Optical Tube Weight | 14.10 kg (31.09 lbs) - OTA Only / 26.30 kg (57.98 lbs) - Combined Total Assembly Weight |
| Mount Attachment Type | Side-Mounted Cast Altitude Tension Hubs Resting into Dobsonian Rocker Box Channels |
| Finder Scope Specification | 8x50 High-Aperture Optical Crosshair Finder Scope Assembly Fixed on Base Base shoe |
| Included Accessories | 254mm Parabolic Newtonian OTA, Wooden Rocker Box Base, Side Altitude Clamping Brackets, Eyepiece Storage Tray Extension, 8x50 Finder Scope, 1.25-inch Plossl 25mm Eyepiece, 1.25-inch Plossl 10mm Eyepiece |
| Standard Warranty | 2-Year Limited Warranty |
| Application | Detailed resolve loops of globular cluster star paths and deep structural galactic extensions, leaning on a rich 10-inch objective field to lift low-intensity photon signals. |


































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