Omegon Advanced N 254/1250 Dobsonian Telescope

SKU:

OMEGON-2541250

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
$595.00

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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

BrandOmegon
Full Model CodeOmegon Advanced N 254/1250 Parabolic Newtonian Reflector Dobsonian Base Mount System
Country of OriginGermany (Designed) / China (Manufactured)
Optical DesignNewtonian Reflector (Parabolic Primary Mirror Layout with Planar Secondary Mirror)
Aperture254 mm (10.00 inches)
Focal Length1250 mm
Focal Ratiof/4.9
Optical CoatingsHigh-Reflectivity Multi-Layer Aluminum Coating Matrix with Protective Silicon Dioxide Top Coat
Glass MaterialStandard BK7 Optical Glass Substrates
Secondary Mirror Obstruction58 mm
Secondary Mirror Obstruction by Diameter22.83%
Secondary Mirror Obstruction by Area5.21%
Resolving Power0.46 Arcseconds (Dawes), 0.54 Arcseconds (Rayleigh)
Limiting Visual Magnitude13.8
Highest Useful Magnification500x
Lowest Useful Magnification36x
Optical Tube MaterialRoll-Formed Heavy-Gauge Steel Cylinder Shell with Cast Aluminum Cell Framework End Rings
Focuser Style & Mechanism2-inch Crayford Precision Friction Drive Focuser Assembly with Step-Down 1.25-inch Adapter Collar
Mirror Lock MechanismYes (Rear Secondary Pull-and-Push Manual Collimation Retention Screws on Mirror Base)
Optical Tube Dimensions300 mm x 1210 mm
Optical Tube Weight14.10 kg (31.09 lbs) - OTA Only / 26.30 kg (57.98 lbs) - Combined Total Assembly Weight
Mount Attachment TypeSide-Mounted Cast Altitude Tension Hubs Resting into Dobsonian Rocker Box Channels
Finder Scope Specification8x50 High-Aperture Optical Crosshair Finder Scope Assembly Fixed on Base Base shoe
Included Accessories254mm 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 Warranty2-Year Limited Warranty
ApplicationDetailed 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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