OOUK CT10 Ultra Newtonian Optical Tube Assembly

OOUK CT10 Ultra Newtonian Optical Tube Assembly
Item # OU-CT10
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  • Optical Design: Enhanced Ultra- Newtonian
  • Aperture: 250mm / 9.8"
  • Focal Length: 1200mm
  • Focal Ratio: F/4.8
  • Optical Glass: Extensively tested Suprax
  • Optical Coatings: Hilux OOUK Proprietary Coating
  • Included Focuser: 2' Precision Focuser
  • Included Finder: 8x50 Achromat
  • Most Suited For: Solar System Imaging (Planetary or Lunar)


OOUK, as always, delivers nothing short of the utmost in quality Telescope technology with their 250mm CT10 Ultra-Newtonian OTA. Enjoy space age construction and hyper-tested optics in conjunction, working together to ensure the finest possible astronomy experience for you, the discerning astronomer. Not only does this scope utilize the utmost in technological innovation in regards to high tier space-age carbon fiber construction, but the design is constantly being improved and computer optimized by the highly skilled technicians back at Orion Optics UK. After they have fully prepared themselves to give you the best scope possible, they then proceed to hand-craft your scope with CNC machining assistance. Every step is manually attended to by a technician, each step checked over endlessly as it is performed, and each process being constantly refined. This results in a carbon fiber sandwich that ensures absolutely zero flexure and thermal expansion, the highly thermally stable and durable construction yielding for you a telescope that provides the same consistent view the entire night of viewing through!

The CT10 is a splendid quality, high speed, high contrast, low flexure Newtonian refractor of the utmost in terms of meticulous design and composition. It is most often used to image planets and the moon, but is also liable to provide a splendid visual experience for these targets. All in all, it provides excellent resolution for all kinds of celestial objects, with a specialization on those within our own solar system that is certainly of value and note. The design makes use of a 9 Point Flotation CNC machined mirror cell in the rear mirror support. This design causes the scope to maintain positional accuracy with startling consistency, resulting in a perfect image quality and clarity.

This beautiful Ultra-Newtonian also makes use of a precision 2" focuser, as well as a rear-mounted fan cooling system that can be left in continuous operation if you so desire, aiding even further in minimizing any thermal threats towards your image stability. An adjustable 50mm achromatic finder is also included, to assist you in finding the faintest, least visible of night sky objects to train your majestic scope towards. This CT telescope, like all CT telescopes, is supplied with a Zygo report showing all relevant details of the mirrors performance during the exhaustive testing performed at OOUK's optical laboratories.

Manufacturer Product Number: CT10
Additional Information

Additional Information

Mount Type None - Optical Tube Only
Optical Design Newtonian Reflector
Telescope Focal Length 1200mm
Telescope Aperture 250mm / 9.8"
Telescope Focal Ratio F/4.8
Optical Tube Outer Diameter 300mm
Length of Optical Tube 1050mm
Focuser Size 2"
Manufacturer OOUK
Warranty 2 Year Warranty
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